Patent Publication Number: US-11044894-B2

Title: Terrarium and related method of use

Description:
BACKGROUND OF THE INVENTION 
     The present invention relates to enclosures, and more particularly to a terrarium for housing plants and/or animals, and a related method of use. 
     There are a variety of terrariums used to house and keep animals, such as reptiles, amphibians and fish, as well as other animals, and plants. Conventional terrariums are constructed to include transparent glass so that users can observe the animals or plants from outside the terrarium. Many terrariums are constructed in the form of a box or rectangular shape for simplicity. For example, some are formed from four glass walls arranged perpendicular to one another to form a box shape. The walls are fastened to a bottom and a rectangular cover rests atop the walls to prevent the animals from escaping. The cover typically is fully supported by the walls, and is removable to access the interior of the terrarium for routine maintenance and cleaning. This can be helpful, but in many cases, access to the interior from the top of the terrarium can be limited, particularly for tall-walled terrariums. Reaching to the bottom of the terrarium, where most animal waste is disposed, can also be burdensome, requiring awkward user orientation and/or special tools. 
     Many terrariums are used to house animals that require certain humidity, ventilation and thermal conditions. While some manufacturers try to address these requirements, adding special fans and/or humidifiers, they usually fall short due to the size and shape of conventional enclosures. Frequently, the add-ons also increase electricity consumption, and thus the cost of maintaining the terrarium. 
     Manufacturers typically ship terrariums in their final form. Where the terrariums are large, the shipping can be expensive, and the packaging for the same can be overly bulky and unwieldy. 
     Conventional terrariums also can be outfitted with a variety of accessories, depending on the animals, plants and their native habitat. For example, some terrariums can have lights disposed in the cover. To power these lights, an electrical cord extends from the cover and down a side wall of the terrarium. Frequently, the electrical cord is left unconcealed, which can be unsightly and can present safety issues. As another example, a water dish can be placed on the floor of the terrarium for the animals to drink and use. While this can be helpful, some animals, such as snakes, prefer elevated positions in the terrarium, and are less likely to visit the water on the bottom. As yet another example, artificial foliage or trees can be placed inside the terrarium for animals to use. These items, however, can be unwieldy and difficult to secure, particularly where they are self-supporting or leaned into the corners of the walls. 
     Accordingly, there remains room for improvement in the field of terrariums to provide easier access to the interior, less clutter for accessories, better ventilation, easy shipping, and efficient use of space. 
     SUMMARY OF THE INVENTION 
     A terrarium including a base, a support column, a top, and one or more arcuate panels with a closure is provided. 
     In one embodiment, the base can include one or more base channels, and the top can include one or more top channels. The top can be supported entirely by the support column at a first preselected distance from the base. 
     In another embodiment, the arcuate panels can extend between the top and the base, and can be disposed in the top channel and the base channel. A first panel can include first and second side edges, separated from one another optionally forming an opening between the top and the base. 
     In still another embodiment, a second arcuate panel can be disposed in another top channel and another base channel. This second arcuate panel can form a closure over the opening. The second arcuate panel can be slidably disposed in the other top and base channels to enable it to be slid over and away from the opening to expose an internal compartment of the terrarium. 
     In even another embodiment, the at least one of the first and second arcuate panels is a transparent panel so that a user can view inside the terrarium to thereby observe plants and animals therein. 
     In yet another embodiment, the support column can define an interior bore, extending from an upper end to a lower end, effectively forming a chimney or ventilation conduit for the internal compartment. The bottom of the chimney can be open to an underside of the base to permit airflow under the base and into the chimney. 
     In a further embodiment, the support column can include first air vents in the lower end and second air vents in the upper end. These vents can be selectively opened and closed to modulate ventilation and air flow through the chimney and thus the internal compartment. 
     In still a further embodiment, the interior bore can house an electrical cord and/or a conduit which extends upward within the interior bore toward the top. The top can include a light that projects radiation into the internal compartment, and the electrical cord can be joined with the light to power it. The electrical cord optionally can be joined with a heater or some other electrical device disposed in the internal compartment. The conduit can be joined with a watering bucket, which can intermittently drip water into the internal compartment. 
     In yet a further embodiment, a support ring can be joined with the column. The support ring can be configured to support various accessories within the terrarium. For example, the support ring can be joined with a watering receptacle, a platform and/or a perch. The support ring engages the column and supports the accessory at a preselected distance from the base, usually depending on the type of animal housed in the terrarium. A user can adjust the location of the support ring relative to the column and thereby adjust the preselected distance to fine tune it for a particular animal. 
     In even a further embodiment, one or more spacers can be used to engage and support the support rings. The spacers also can selectively space the support rings vertically along the support column so that air vents and opening in the column are easily accessible. 
     In another embodiment, the terrarium can include a base, a top and a support column extending upward from the base and engaging the top to support the top. The top can include a top channel and the base can include a base channel having an upper support rim. A panel can be slidable disposed in the top channel and base channel. A first floater projection can be joined with the panel and can slidably engage the upper support rim. 
     In still another embodiment, the first floater projection can support the panel relative to the base channel such that a first panel lower edge minimally engages a base channel bottom wall, and optionally is disposed out of contact or engagement with the base channel bottom wall. This can enhance the sliding action of the panel relative to the base channel. 
     In yet another embodiment, the first floater projection can be joined with the panel adjacent a panel first side edge, generally near a first end of the panel. A second floater projection can be joined with the panel adjacent a panel second side edge, generally near a second, distal end of the panel. The second floater projection can support the panel relative to the base channel adjacent the second end such that the first panel lower edge minimally engages the base channel bottom wall, and optionally is disposed out of contact or engagement with the base channel bottom wall. This can further enhance the sliding action of the panel relative to the base channel. 
     In even another embodiment, the first floater projection can be in the form of a handle such that a user can engage the handle and slide the first panel, relative to the base channel and the top channel, all while the handle supports the first panel lower edge above a channel bottom wall so that the panel slides effortlessly in the base channel. Optionally, the first floater projection can completely support the first panel above the channel bottom wall so that the first panel lower edge does not engage that channel bottom wall during operation of the first panel, and optionally is spaced a gap from that channel bottom wall. 
     In still even another embodiment, the first panel can be an arcuate panel and can include a first floater projection that forms a handle oriented generally vertically at a first end of the first panel, as well as a second floater projection at a second end of the first panel. The first panel can form a closure over an opening. The first floater and second floater projections can engage a portion of a base channel and support a substantial portion of the weight of the first panel so that a first panel lower edge floats above a channel bottom wall of the base channel, reducing friction of that lower edge engaging the base channel so that the arcuate panel opens easily. 
     In still a further embodiment, a method of using the terrarium is provided. The method can include: placing a base including a first base channel, on a support surface; joining a support column with the base, the support column defining an interior bore that forms a chimney adapted to convey air from adjacent the base upward; joining a top with the support column, the top including a first top channel, the top being supported entirely by the support column at a first preselected distance from the base; moving a first flat, planar sheet in the first base channel and in the first top channel so as to bend the first, flat planar sheet into a first arcuate panel; forming an opening between first and second ends of the first arcuate panel; and forming a closure over the opening with a second arcuate panel. 
     The current embodiments of the terrarium and related methods of provide benefits in the field that previously have been unachievable. For example, where the support column supports entirely the top, no additional structure is needed to support the top. Thus, the arcuate panels can be slidable and movable relative to the top without altering the integrity of the terrarium. Where the support column forms a chimney, that component provides ventilation that was not previously available. Where the chimney is associated with selectively modifiable air vents, a user can precisely modulate ventilation and heat in the internal compartment. Where the modular support rings and accessories are included, a user can custom build their own terrarium based on their personal preferences or those of the animals housed therein. In cases where the support column includes an interior bore, unsightly electrical cords and other conduits can be selectively concealed therein. In addition, where the arcuate panels are initially provided as flat planar sheets, those sheets, as well as the other components of the terrarium can be shipped in a relatively flat, manageable configuration and in associated packaging. 
     These and other objects, advantages, and features of the invention will be more fully understood and appreciated by reference to the description of the current embodiment and the drawings. 
     Before the embodiments of the invention are explained in detail, it is to be understood that the invention is not limited to the details of operation or to the details of construction and the arrangement of the components set forth in the following description or illustrated in the drawings. The invention may be implemented in various other embodiments and of being practiced or being carried out in alternative ways not expressly disclosed herein. Also, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. The use of “including” and “comprising” and variations thereof is meant to encompass the items listed thereafter and equivalents thereof as well as additional items and equivalents thereof. Further, enumeration may be used in the description of various embodiments. Unless otherwise expressly stated, the use of enumeration should not be construed as limiting the invention to any specific order or number of components. Nor should the use of enumeration be construed as excluding from the scope of the invention any additional steps or components that might be combined with or into the enumerated steps or components. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of a terrarium of a current embodiment in an open mode; 
         FIG. 2  is a perspective view of the terrarium in a closed mode; 
         FIG. 2A  is a section view of a top and panels of the terrarium taken along line  2 A- 2 A in  FIG. 2 ; 
         FIG. 3  is a top view of a base and a top of the terrarium; 
         FIG. 4  is a bottom view of the base; 
         FIG. 5  is a perspective view of a support column installed relative to the base; 
         FIG. 6  is a perspective view of a lower ventilation unit being installed on the support column 
         FIG. 7  is a perspective view of a spacer being installed on the support column; 
         FIG. 8  is a perspective view of support ring joined with a platform being installed on the support column; 
         FIG. 9  is a perspective view of an upper ventilation unit being installed on the support column; 
         FIG. 10  is a perspective view of the support column being occupied by different support rings, accessories and ventilation units; 
         FIG. 11  is a perspective view of a locking mechanism that prevents the top from rotating relative to the support column; 
         FIG. 12  is a perspective view of a bedding barrier placed adjacent channels of the base. 
         FIG. 13  is a top perspective view of the top including a light; 
         FIG. 14  is a perspective view of a flat, planar sheet of polymeric material before installation relative to the top and base; 
         FIG. 15  is a perspective view of the flat, planar sheet being moved in a channel of the base so as to bend the flat planar sheet into a first arcuate panel; 
         FIG. 16  is a perspective view of an introducer channel within which arcuate sheets can be installed relative to a bottom channel; 
         FIG. 17  is a perspective view of a stop in the base channel in relation to an arcuate panel; 
         FIG. 18  is a perspective view of the terrarium with the first arcuate panel fully installed therein; 
         FIG. 19  is a perspective view of a second arcuate panel being installed in another base channel, and being introduced thereto through the introducer channel; 
         FIG. 20  is a perspective view of the second arcuate panel closing a closure formed by the first arcuate panel; 
         FIG. 21  is a perspective view of a panel lock that prevents the second arcuate panel from being opened relative to the opening; 
         FIG. 22  is a top rear perspective view of the terrarium in a closed mode; 
         FIG. 23  is a front view of the terrarium in the closed mode; 
         FIG. 24  is a rear view of the terrarium in the closed mode; 
         FIG. 25  is a left side view of the terrarium in a closed mode, the right side being a mirror image thereof; 
         FIG. 26  is a perspective view of a first alternative embodiment of the terrarium within electrical device being installed through the support column; 
         FIG. 27  is a perspective view of thereof, with a concealer spacer disposed adjacent an electrical cord of the device; 
         FIG. 28  is a perspective view thereof with a conduit being disposed in the support column and projecting out therefrom; 
         FIG. 29  is a perspective view of the first alternative embodiment of the terrarium with a flat planar sheet of material about to be installed therein; 
         FIG. 30  is a perspective view of the first alternative embodiment of the terrarium, with all arcuate panels installed, and fully forming an internal compartment therein; 
         FIG. 31  is a top plan view of a second alternative embodiment, illustrating hinged panel doors for access to the internal compartment of the terrarium; 
         FIG. 32  is a top plan view of a third alternative embodiment, illustrating a single arcuate panel and a hinged panel for access to the internal compartment of the terrarium; 
         FIG. 33  is a front view of a fourth alternative embodiment including multiple, non-central support columns; 
         FIG. 34  is a top plan view of the support columns and associated arcuate panel; 
         FIG. 35  is a perspective view of the fifth alternative embodiment of the terrarium, with all arcuate panels installed, and illustrating a first floater projection that supports a closure panel at a first end within a base channel; 
         FIG. 36  is another perspective view thereof, illustrating a second floater projection that supports the closure panel at a second end within the base channel; 
         FIG. 37  is a top view of the terrarium with a top removed from the closure panel and other panels, illustrating the top channel of a top of the terrarium; and 
         FIG. 38  is a perspective view of the terrarium with the top removed, illustrating another fixed panel. 
     
    
    
     DESCRIPTION OF THE CURRENT EMBODIMENTS 
     A current embodiment of the terrarium is illustrated in  FIGS. 1-21 , and generally designated  10 . The terrarium can include a base  20 , a top  30  and a support column  40 . The support column can be configured to define an interior bore  43  that extends from a first or lower end  41  to a second or upper and  42 . The interior bore  43  can form a chimney within the confines of the terrarium. This chimney can provide ventilation and can circulate air within the internal compartment  50  of the terrarium via a system of one or more vents, for example lower and upper vents  41 V and  42 V. The support column  40  also can be constructed so that it substantially entirely supports the top  30  relative to the base  20 , holding the top a first preselected distance D 1  therefrom. The support column can support optionally 95%-100% of the weight of the top  30 , while the one or more arcuate panels  61  and  62  optionally can support 5%-0% of the weight of the top  30 . 
     The arcuate panels themselves can be constructed initially as flat, planar sheets of material. When the flat sheets are initially slid into respective channels of the top and the base, the sheets bend and conform to an arcuate shape, thereby forming the arcuate panels  61  and  62 . The arcuate panels can be configured so that the first arcuate panel  61 , after installation, remains substantially stationary relative to its channel, as well as the top and the base. This first arcuate panel also can form an opening  99 O between its left and right side edges  61 L and  61 R, as shown in  FIG. 1 . The second arcuate panel  62  can form a closure over this opening as shown in  FIGS. 2 and 22-24 . Optionally, the second arcuate panel  62  can slide relative to the top and base, generally parallel to the first panel, to open and close the opening  90 O. 
     As used herein, a terrarium can refer to a vivarium for animals and/or plants, optionally including at least one transparent panel so the same can be viewed by a user. The terrarium herein can be used with any type of amphibian or reptile, such as lizards, frogs, snakes, alligators, salamanders, newts and the like. The terrarium also can be used with aquatic animals, such as various types of fish and the like. The terrarium can be used with land dwelling or tree dwelling animals, and can be utilized with virtually any type of plant and/or foliage, alone or used to form habitat for animals housed in the terrarium. 
     Further, as used herein, an arcuate panel can refer to any panel or sheet that is formed to include at least one rounded portion. For example, a panel can be pre-formed and/or partially bent to form a partial cylindrical shape, a partial elliptical shape, a partial oval shape, a parabolic shape and the like when the panel is viewed from an upper or lower edge thereof. The at least one rounded portion can be joined with other more linear or curvilinear portions, depending on the application. 
     The individual components and construction of the terrarium  10  will now be described in further detail. Referring to  FIGS. 1 and 3-5 , the terrarium  10  includes a base  20  and a top  30 . The base  20  includes an outer periphery  20 O. This outer periphery  20 O as illustrated can be in the form of a circle. Of course other shapes, such as polygons, trapezoids and other shapes can be used to form the outer perimeter. The base  20  includes an upper surface  20 U and a lower surface  20 L. The upper surface  20 U generally faces upward, toward the internal compartment  50 . The lower surface  20 L generally faces downward toward a support surface SS upon which the terrarium is placed. The lower surface  20 L can include one or more feet  20 F. These feet can place the base  20  and in particular the lower surface  20 L a preselected distance F 1  from the support surface SS. Accordingly, airflow AF can move toward the opening  25  of the base  20 , which can be directly associated with an in fluid communication with the chimney and/or interior bore  43  of the support column  40 . 
     The base  20  can define a base opening  25  in a central location relative to the outer periphery  20 O. Where the outer periphery  20 O is circular in shape, the opening  25  can be disposed directly in the geometric center of the outer periphery  20 O. Of course, in other constructions, there can be more than one opening  25  that is defined in the base for more than one support columns, and these openings can be displaced from the geometric center of the outer periphery  20 O. Optionally, more than one support column can be utilized in the terrarium  10  and spaced according to the support function thereof. Further optionally, all the support columns can be spaced inward from any outer walls or arcuate panels a reselected distance, in some cases, so that the support columns do not engage or contact those walls or panels. 
     The opening  25  itself can include a threaded interior  25 T. This threaded interior  25 T can mesh with corresponding threads on the lower end  41  of the support column  40 . In this manner, the support column  40  can be threaded into, and fastened or secured fixedly to the base  20 . Optionally, the opening can be absent, and the support column can be integrally formed with the base. In other constructions, the support column can be fastened and/or secured to the base using clamps or the like. Further optionally, the support column can be joined fixedly with the top and/or the base using other connections. For example, the column can be adhered, welded, melted to, molded to, integrally formed with, pinned, locked or otherwise connected to the top and the base. 
     The base  20  can include a first base channel  21  and a second base channel  22 . Each of these base channels can respectively guide the first arcuate panel  61  and the second arcuate panel  62 . The first base channel  21  can be disposed inwardly from the second base channel  22 , and optionally located a distance farther away from the outer periphery  20 O. As illustrated, the channels can be of a circular configuration but of course, if other panel shapes are desired, that shape can be modified to an oval, elliptical, partial parabolic or some other arcuate shape as described herein. 
     Optionally, the first and second channels  21  and  22  can be U-shaped grooves defined in the upper surface  20 U of the base  20 . In other cases, these channels can be U-shaped frames that extend upward from the upper surface  20 U. In some cases, a separate U-shaped channel hoop can be joined with the base  20  to provide the channel. In other cases, the respective channels can be of an L-shape, with the lower portion of the L secured to the upper surface  20 U of the basin  20 . A variety of other channel configurations can be provided to guide the respective arcuate panels  61  and  62 , and to open and close the terrarium. 
     Optionally, as shown in  FIG. 3 , one or more of the first and second channels can be aligned with and in communication with an introducer channel  23 . This introducer channel can extend inward from the outer periphery  20 O to each of the respective channels. In this manner, a sheet of material, for example a flat, planar sheet can be slid through the introducer channel  23  and selectively introduced into either the respective first and second base channels  21  and  22  as further described below. Further optionally, the top  30  can include a similar introducer channel. 
     Further optionally, as shown in  FIG. 12 , the base  20  can include a barrier wall  23 B. This barrier wall can be used to form a barrier between the upper surface  20 U, upon which bedding B is placed, and the base channels  21 ,  22 . This barrier wall  23 B can prevent the bedding B from entering the base channels  21  and  22 , which in turn can prevent that bedding from impairing movement of the arcuate panels within those channels. The barrier wall can be of a variety of heights, for example optionally 2 inches, further optionally 1 inch, even further optionally ½ inch or smaller, or larger, depending on the bedding, location of the channels and activity of the animals in the bedding B. Alternatively, the barrier wall can be deleted from the construction and the upper surface  20 U can include a recess defined in the base  20  so that the bedding is disposed below the first and second channels  21  and  22 . Other constructions are contemplated for maintaining the bedding out of the channels. 
     With reference to  FIG. 3 , the top  30  can be of a similar shape in configuration as the base  20 . The top  30  can include an outer periphery  30 O that is similar and/or identical to the periphery of the base  20 O. The top  30  also can define first and second top channels  31  and  32 . These channels can be constructed similar to the base channels  21  and  22 , and when the support column is joined with both the top and the base, the top channels  31  and  32  can be generally parallel with the first and second base channels  21  and  22 , with each generally equidistant from the center or longitudinal axis LA of the terrarium. Of course, where other shapes are used for the base and top, these channels can vary in distance from that longitudinal axis LA. 
     As shown in  FIG. 2A , the panels  61  and  62  firs within the first and second top channels  31  and  32  so that a gap G is established between the upper edge  62 U of the second panel  62  and the base or bottom  32 B of the second channel  32 . This gap can be approximately optionally 1/32 inches to ¾ inches, further optionally 1/16 inches to ¼ inches, or other distances depending on the application and the configuration of the channels and panels. A similar gap G likewise can be established between the upper surface  61 U of the first panel  61  and the bottom  31 B of the first top channel  31 . Optionally, this gap G can exist between the panels and the channels, or more generally a space can exist between the panels and the top, because the support column  40  supports virtually all of the weight of the top  30 . Thus, the panels  61  and  62  may not support any of the weight of the top  30 . In this manner, the upper edges of these panels are simply disposed in the respective channels, without bearing much if any weight of the top  30 . 
     As further illustrated in  FIG. 2A , each of the first  61  and second  62  arcuate panels, when installed fully in the respective top channels (as well as the base channels, although not shown) can exert an outward force F 1 , F 2  against the outside walls  32 O and  31 O of the respective top channels  32  and  31 . These forces can be generated if the panels  61  and  62  initially are installed in the terrarium as flat, planar sheets of polymeric material. Optionally, the forces and engagement by the arcuate panels can be substantially only on the outside walls  32 O and  31 O of the channels, but not the inside walls  32 I and  31 I of the channels. In some cases, the panels in the channels may only engage the outer walls, but not the inner wells of the channels. As the sheets are bent upon insertion into the channels, as described further below, the effect is that the panels, when in the channels, exert the forces F 1  and F 2  against the outer walls of the respective channels. This effect is due to the panels trying to regain the former flat, planar sheet configuration. Indeed, the panels are urged outward, toward the outer boundaries of the channels, due to the flat, planar sheet memory of the panels. If the outer walls were not present, radially outward from the longitudinal axis LA relative to each of the respective first and second channels, then the arcuate panels  61  and  62  might spring outward, trying to re-attain the flat, planar sheet configuration. 
     The top also can include a connector  35  that is configured to join with the upper end  42  of the support column  40 . As shown in  FIGS. 3 and 5 , the upper and of the support column can be threaded. The connector element  35  also can be correspondingly threaded. In this manner, the top  30  can be threaded onto and fixedly joined with the support column  40 . If desired, as shown in  FIG. 11 , the support column and connector  35  can be joined via a locking pin  35 L that extends through corresponding holes in the connector  35  and the upper end of the support column  40 . This can prevent the top from rotating when the arcuate panels are installed relative to the top, sliding within the top channels  31  and  32 . 
     Optionally, where the terrarium is set up to include one or more lighting and/or heater systems, the top can define one or more additional openings  36 . These openings  36  can extend completely through the top, for example, from the upper surface  30 U to the lower surface  30 L of the top  30 . These openings  36  also can be outfitted with a cover screen  30   6 S, which can be designed to ensure that the animals within the terrarium do not engage the light and/or heating element, which could potentially cause injury. 
     The base and top can be constructed from a variety of materials. For example these components can be constructed from plastic, wood, composites, metal and the like. The components can be formed via injection molding, 3-D printing, pour molding, casting, machining and other similar techniques. 
     As shown in  FIG. 5 , the terrarium  10  also includes the support column  40 , which is secured to the base  30  and projects upwardly therefrom. The support column can be in the form of cylindrical, hollow tube constructed from a relatively high-strength material so that it can support the weight of the top  30 . As mentioned above, the support column can define an interior bore  43 . The support column can include uniform sidewall  40 SW that extends around the interior bore as shown in  FIG. 6 . Although not shown, in some cases, the support column can be a solid structure, without an interior bore  43 . 
     The support column can be tubular, defining the interior bore  43  from the lower and  41  all the way to the upper end  42  so that air can freely flow through that interior bore. In some cases, the support column can be constructed from a polymeric pipe and/or a steel pipe or metal pipe. 
     As shown in  FIGS. 5 and 6 , the support column can be outfitted to include multiple access ports  40 AP. These access ports can be sized to extend an optional electrical cord there through to power a electrical device at a predetermined location along the support column, and thus a preselected distance away from the base  20 . Of course, the support column can be used to introduce water, gases or other items into the internal compartment depending on the application. 
     As shown in  FIG. 6-7 , the support column  40  can define first or lower air vents  44  adjacent the lower end  41 . These air vents can be configured to draw in or expel air from or into the support column. In this manner, airflow can move through the interior bore  43 , optionally improving ventilation and air circulation within the internal compartment  50 . The air vents  44  can be opened and closed by use a first ventilation unit  45  which can be slid in direction S over the support column  40  and into communication with the first air vents  44 . Optionally, the first ventilation unit  45  can include corresponding vents  45  of the can be selectively aligned or misaligned with the first air vents  44 , thereby opening and closing those vents  44 . In this manner, a user can modulate airflow into the chimney/support column, and thus the respective ventilation in the internal compartment  50 . The first ventilation unit  45  can be rotatable in direction R to selectively aligned and misalign the vents  45 V with the first vents  44 , thereby altering airflow through both. If desired, the ventilation unit  45  can be outfitted with ventilation screens  45 S disposed in the vents  45 V to prevent animals from escaping from the internal compartment  50  through the vents  44 . 
     As shown in  FIGS. 9 and 11 , the support column  40  can further define a second air vents  44 ′ adjacent the upper and  42  of the support column  40 . These air vents can be selectively opened and closed via the second ventilation unit  45 ′ which is configured similar to the first ventilation unit  45 , and operates in a manner similar to that described above in connection with that unit  45 . Further optionally, the first and second air vents  44 ,  44 ′, and associated ventilation units  45 ,  45 ′, can cooperate to provide selective fluid communication within the support column and the internal compartment  50 . As an example, the air vents  44  in the lower and can operate as a cold air return to expel cold air from the bottom of the internal compartment  50 . The upper vents  44 ′ can be used to expel warm air from the chimney into the internal compartment  50 , or alternatively these air vents in the upper end  42  can be used to vent excess heat within the internal compartment out through the vents  44 ′, into the support column. As will be evident, the upper and lower vents can function in a manner so that the support column, and in particular the interior bore  43  acts as a chimney. As shown in  FIG. 6 , airflow can go into the lower vents  44 . As shown in  FIG. 11 , airflow can travel through the chimney and out the vents near the upper end  42  of the support column. As shown in  FIG. 13 , airflow can optionally flow out through the top vent  32 V defined by the top  30  of the terrarium  10 . 
     Referring to  FIGS. 7-10 , the support column can be configured to accommodate a variety of spacers  46 P and support rings  46 S. The spacers  46 P can be used to selectively space the support rings  46 S from the base  20 . The spacers optionally can be of a preselected height to ensure that the support rings  46 S do not obstruct access ports  40 AP. The spacers can generally be of a tubular construction having an inner diameter that is larger than the outer diameter of the support column so that the spacers, as shown in  FIG. 7 , can be slid downward in direction S, to stack upon an engage the next lower component in the support column. 
     The support rings  46 S can include in and interior diameter  46 SI that also is slightly larger than the exterior outer diameter of the support column  40  so that the support rings can be slid down onto the support column. Optionally, the lower surface of the support ring  46 S can engage an upper surface or other portion of the spacer to further support the support ring. The support rings  46 S can be configured to support an accessory, such as a platform  46 B a water receptacle  46 W, a perch  46 C or other devices for the general entertainment, feeding and/or support of animals disposed and the housed in the internal compartment  50 . These respective accessories can extend radially outward from the longitudinal axis LA of the support column and/or terrarium. As shown in  FIG. 10 , multiple spacers  46 P and multiple support rings  46 S can be selectively disposed and supported by support column  40 . 
     Although not shown, the support column  40  can be outfitted with a variety of additional ports and/or holes that extend between the interior bore and the internal compartment  50  of the terrarium. The support column can include heater elements, radiation units, lighting units, watering units or other devices housed in or at least partially extending through these ports to provide heat, radiation, light and/or water into the internal compartment  50 . 
     As shown in  FIG. 13 , the support column  40 , and in particular the interior bore  43  within the support column  40 , can be used to house electrical cords, conduits or other items. If desired, the terrarium can be outfitted with a light unit  70 , which optionally can be disposed in one of the openings  36  of the top  30 . In this manner, as shown in  FIG. 14 , the light  70  can emit light L downward into the internal compartment  50 . Of course, the light unit  70  can be replaced with a heater, a fan, or some other electrical device which can alter the environment within the internal compartment  50  to benefit of animals and/or plants housed therein. As shown in  FIG. 13 , the light is joined with the electrical cord  72  which extends downwardly into the interior bore  43  the support column  40 . The cord can extend out from the opening  25  in the base  20  and outward beyond the outer periphery  20 O of the basin  20 . From there, the cord can be plugged into a power source. 
     In an alternative embodiment of the terrarium  110  shown in  FIG. 26-28 , the support column  140  and in particular its interior bore  143  can house cords for electrical devices in locations below the upper end  142  of the column. For example as shown in  FIG. 26 , the support column can define a lower access port  140 AP. A user can extend and electrical cord  172  through that lower access port  140 AP. The electrical cord can extend into the interior bore  143  of the support column. The electrical cord  172  can be joined with an electrical water pump  170 . In this manner, the cord of the water pump can be concealed within the support column and not overly visible. The cord also can be captured within a notch  146  and of a special spacer  146 P that is slid over the exterior of the support column. This can further conceal the access port  140 AP so that animals cannot escape through it and into the support column. 
     In the alternative embodiment of the terrarium  110 , shown in  FIG. 28 , the interior bore  143  of the support column  140  also can be used to conceal at least a portion of a conduit  173 . This conduit can be a watering tube for a drip feeder to slowly drip water into the internal compartment of the finished terrarium. The conduit can extend through a portion of the interior bore  143  of the support column  140 . The conduit also can extend through an upper access port  140 AP′, and further through a notch  146 N′ defined by yet another spacer  146 ′. In this construction, the access port  140  AP&#39; can also be covered to prevent animals from escaping there through. 
     Returning to the embodiment of the terrarium  10  shown in  FIGS. 14-25 , that construction can include one or more arcuate panels  61  and  62 . These arcuate panels  61  and  62  can be constructed from a variety of materials, depending on the application and the desired properties of the panels. As illustrated, the panels  61  and  62  can be constructed from a transparent, polymeric material such as Plexi-glass™, Lexan™ or other materials, such as composite materials and/or metal materials, optionally with adequate openings to make the panel appear to be transparent or semi-transparent, or other materials optionally capable of being transparent or translucent, and in some cases flexible when in a sheet form. The panels  61  and  62  alternatively can be constructed from a translucent material and/or an opaque material. For example, as shown in the alternative embodiment in  FIGS. 29-30 , the first panel  161  is constructed from a metal sheet, which optionally can be previously constructed in a flat planar configuration. The metal sheet may include a plurality of apertures and/or perforations, so that the sheet acts like a screen to provide air flow through the internal compartment of the terrarium. Of course, other sheets, such as plastic sheets, opaque or otherwise non-transmissive can be used in its place. Further optionally, when the perforated sheets and panels are used, the vents and ventilation units might be eliminated from the construction, depending on the application. 
     As shown in  FIGS. 14 and 18 , the first panel  61  can include an upper edge  61 U and a lower edge  61 L distal from one another. Generally the upper edge  61 U is configured to slide within the first top channel  31  and the first base channel  21  when installed in the terrarium. The top edge  61 U and the lower edge  61 L can be generally parallel with one another. The panel  61  also can include a first side edge  61 S 1  and a second side edge  61 S 2  disposed on an opposite side of the panel  61 . These edges can be generally parallel with one another. Optionally, each of the edges can be housed or otherwise concealed within a channel or flange  63 . This channel or flange can optionally be of a U-shape, and can protect the respective side edges of the panel to prevent cracking, chipping or damage to the same. These channels also can be outfitted with projections and/or handles (not shown) to assist in moving the panel  61  through the respective channels  21  and  31 . 
     As shown in  FIG. 14 , the first panel  61  can be initially provided in the form of a flat, planar sheet of material. When the flat planar sheet is inserted into and moved through the respective top and bottom channels, it attains and arcuate configuration as shown for example in  FIGS. 15-18 . This arcuate configuration can be dictated via the configuration of the top and base channels as further described below. 
     As shown in  FIG. 18 , after the panel  61  is fully installed in the respective top and base channels  31  and  21 , it is of an arcuate shape. The upper edge  61 U of the panel is disposed in the top channel  31 , as shown in  FIG. 2A , and described above. The lower edge is disposed in the base channel  21 . The first side edge  61 S 1  and second side edge  61 S 2  are separated from one another by a distance to effectively form an opening  99 O between these edges. This opening provides access to the internal compartment  50  of the completed terrarium  10 . This opening can extend optionally at least 10%, further optionally at least 20%, even further optionally at least 30%, yet further optionally, yet further optionally at least 40%, and even further optionally at least 50%, around the circumference or outside dimension of the base  20 . The precise size of the opening can be dictated by desired access to the internal compartment  50 . 
     Optionally, the first panel  61  can be rotationally constrained in the respective top and base channels. For example, as shown in  FIGS. 16 and 17 , a first dowel  61 D can be disposed in the base  20 , and can project into the first base channel  21 , thereby forming a stop against which the side edge  61 S 2  is disposed. A second dowel  61 F can be placed in the first base channel  21  at another location, thereby forming a second stop against which the side edge  61 S 2  is disposed. These respective stops can effectively form the size of the opening  99 O. The stops also can prevent the first panel  61  from rotating and are moving when the second arcuate panel  62  is opened and/or closed or otherwise moved in its respective second top and base channels. 
     As shown in  FIGS. 2 and 23 , the second panel  62  also can be an arcuate panel. It can be constructed from materials similar to those described above, and can be formed in the arcuate shape in a manner similar to that described in connection with the first panel. The second panel  62  can include an upper edge  62 U, a lower edge  62 L, and first and second side edges  62 S 1  and  62 S 2 . The distance between the first side edge  62 S 1  and the second side edge  62 S 2  can be greater than or less than the distance between the respective side edges  61 S 1  and  61 S 2  of the first arcuate panel. Optionally, one or more additional arcuate panels can be added to those as illustrated. 
     As with the first panel above, the respective side edges  62 S 1  and  62 S 2  can be outfitted with channels to protect the edges. These channels can be outfitted with a handle  62 H ( FIG. 19 ) the can assist in opening and closing or otherwise moving the second arcuate panel  62 . The second arcuate panel is disposed in the respective top and base channels and is slidable at the front of the terrarium  10 . 
     When fully installed, as shown in  FIGS. 2, 23, and 22  the second arcuate panel  62  spans between the edges  61 S 1  and  61 S 2  so as to substantially close the opening  99 O, and thus provide a complete enclosure of the internal compartment  50 . Optionally, a stop or dowel  62 D, shown in  FIGS. 16 and 20 , can be installed in the second base channel  22  so as to form a stop against which the side edge  62 S 1  of the second arcuate panel  62  can stop, to thereby provide adequate closure of the opening  99 O. Further optionally, to lock the terrarium in a closed configuration so animals therein cannot escape through the opening  990 , the second arcuate panel  62  can be pushed against the stop  62 D, which engages a first side edge of that panel. In addition, a key or secondary removable pin  62 F can be installed in the base  20  and project into the second base channel  22 . This in turn, forms another stop against which the second arcuate panel  62  abuts. In this manner, the second arcuate panel  62  is held in a fixed or locked configuration relative to the first arcuate panel, as well as the base. 
     Optionally, although not shown, the second arcuate panel  62  can be of a fixed arcuate shape. Rather than starting out as a flat planar sheet, it can be molded or formed into an arcuate panel. This arcuate panel can be movably joined with the terrarium, for example, directly to the side edge of the first panel  61 . This connection can be in the form of a hinge so that the second arcuate panel  62  can swing outward, thereby providing access to the opening  99 O. Further optionally, the arcuate panels herein can be comprised of multiple narrow flat panels that are hinged together so that they can be installed in the respective top and base channels. 
     A method of using the terrarium  10  will now be described with reference to  FIGS. 1-23 . It will be appreciated that when the terrarium is used in conjunction with panels that are in initially in a flat, planar configuration, the entire terrarium and its components can be shipped in a relatively flat configuration. Depending on the size of the terrarium, the overall height of packaging for the terrarium, when shipped flat, can be optionally less than 1 foot, further optionally less than 6 inches, and even further optionally less than 4 inches in height. The length and width, of course can vary depending on the sizes of the base, top and the panels, as well as the length of the support column. With the capability to flat ship the terrarium, associated shipping and handling fees can be significantly reduced. Further, because the overall dimensions of the terrarium in the shipped state are significantly less than the overall dimensions of the terrarium in the fully assembled state, the terrarium can be stocked in inventory without taking up significant retail floor space. 
     Turning now to  FIGS. 3-11 , the method of using the terrarium can begin with the placing of a base  20  on a support surface SS. A support column  40  can be installed relative to the base by screwing the lower end  41  into the opening  25  of the base  20 . With the support column installed, and optional locking pin (not shown) can be projected through the support column and a portion of the base so that the support column will not rotate relative to the base. A variety of optional spacers, support rings and ventilation units can be slid in direction S downward over the support column  40 . The various support rings and their supported accessories can be oriented relative to the support column  40  in a manner desired by the user. When a sufficient number of spacers, support rings and ventilation units are stacked on the support column as shown in  FIG. 10 , the top  30  can be threaded onto the upper end  42  of the support column as shown in  FIG. 11 . The top also can be rotationally locked relative to the support column with a locking pin  35 L. If desired, as shown in  FIG. 12 , a barrier wall  23 B can be installed adjacent the respective base channels  21  and  22 . 
     Where the terrarium  10  includes a light  70 , that light can be installed in the top  30 , and in particular within an opening  36  to project downward from the top. Any respective electrical cords  72  can be snaked through the interior bore  43  of the support column  40  and plugged into the appropriate power source. Any other electrical devices also can be installed at this point, and/or while the spacers and support rings being installed on the support column. With the top  30  installed on the support column  40 , that support column substantially entirely supports the top at the preselected distance D 1  from the base  20 . Optionally, no other structure is used support the top in this configuration. 
     With the top, base and support column constructed, the first and second panels  61  and  62  can be installed. As shown in  FIG. 14 , the first panel  61  is provided in a flat, planar sheet configuration and is in the form of a transparent polymeric material. The first side edge  61 S 1  is inserted into the introducer channel  23 , as shown in  FIG. 15 . That flat planar sheet  61  is moved into the first base channel  21  and the first top channel  31 . As the sheet moves further into the channel, it begins to take on the curvature and art of those respective channels. In turn, the sheet  61  begins to bend and/or flex so as to take on an arcuate shape, thereby forming the arcuate panel  61 . The first panel is continued to be moved until it is fully installed in the first base channel and first top channel. The respective dowels can be placed to secure the respective edges in desired locations. The side edges also form the opening  99 O of the terrarium upon completion of installation of the first panel in the first top and first base channels. 
     The second panel  62  can be installed in a similar manner to that as the first channel  61 . Again, the second channel can start out as a flat, planar sheet of material. It can be introduced into the second top and base channels  22  and  32  via the introducer channel  23 . It can bend and flex as it moves there through. Eventually, the second arcuate panel can be placed over the opening  99 O between the respective edges of the first arcuate panel  61 . In so doing, it effectively forms a closure over that opening. Respective dowels and locking pins can be placed to secure the second arcuate flannel if desired. 
     After the terrarium  10  is assembled, the user can prepare it for occupation by animals. Artificial foliage, watering receptacles, and other accessories can be placed within the internal compartment  50  for use by the animals. Of course, optionally, the foregoing items can be installed before the panels if desired. 
     A second alternative embodiment of the terrarium is illustrated in  FIG. 31  and generally designated  210 . This embodiment can be similar in structure, function and operation to the embodiments described herein. For example, the terrarium  210  can include a base  220  and a top (not shown) supported by the support column  240 , as well as the first  261  and second  262  arcuate panels, which are disposed in respective top and base channels, although not shown. The first arcuate panel  261  can also form an opening to  299 O that spans across the base  220 . This opening  299 O can be closed by a closure which is effectively formed by second arcuate panel  262 , as well as additional panels  267  and  268 . The first and second arcuate panels can be fixedly disposed in their respective top and base channels. Indeed, the second arcuate panel  262  can be relatively immovable after installation relative to the first panel and or the base  220 . 
     Optionally, the additional panels  267  and  268  can be hingedly, foldably, slidably, or otherwise attached to the first and/or second arcuate panels, or some other support structure between the top and the base  220 . The panels  267  and  268  can be constructed from materials similar to those from which the first and second arcuate panels are constructed. The panels optionally can be transparent, translucent and/or opaque. The panels can be perforated or vented to allow air to flow there through. The panels  267  and  268  can hinge, pivot and/or move inward or outward as shown in the direction of the arrows E. In this manner, the additional panels  267  and  268  provide access to the internal compartment  250  of the terrarium  210 . Optionally, these additional panels can be of any number, and can be attached to the terrarium to form virtually any type of closure relative to the internal compartment  250 . 
     A third alternative embodiment of the terrarium is illustrated in  FIG. 32  and generally designated  310 . This embodiment can be similar in structure, function and operation to the embodiments described herein. For example, the terrarium  310  can include a base  320  and a top (not shown) supported by the support column  340 , as well as a first  361  arcuate panel, which is disposed in and can be fixed and immovable relative to the respective top and base channels, although not shown. The first arcuate panel  361  optionally can be the only arcuate panel used in this construction. The first arcuate panel  361  can also form an opening to  399 O that spans across a minor side of the base  320 , generally only on one side of the support column  340 . This opening  399 O can be closed by a closure which is effectively formed by a single additional panel  362 . This additional panel  362  can be hingedly, foldably, slidably or otherwise attached to the first arcuate panel  361 , or some other support structure between the top and the base  320 . The panel  362  can be constructed from materials similar to those from which the first arcuate panel is constructed. The panel optionally can be transparent, translucent and/or opaque, and can be perforated or vented to allow air to flow there through. The second panel  362  can hinge, pivot and/or move inward or outward as shown in the direction of the arrows P. In this manner, the second panel  362  provides access to the internal compartment  350  of the terrarium  310 . Optionally, the additional panel can be of any number, and can be attached to the terrarium to form virtually any type of closure relative to the internal compartment  350 . 
     A fourth alternative embodiment of the terrarium is illustrated in  FIGS. 33-34  and generally designated  410 . This embodiment can be similar in structure, function and operation to the embodiments described herein. For example, the terrarium  410  can include a base  420  and a top  430 , as well as a first  461  arcuate panel, which is slidable in respective top  431  and base  421  tracks associated with the top and base. The arcuate panel  461  can be transparent. The terrarium also can include a second arcuate panel  462 . This arcuate panel can be generally fixed between the supports  440 A and  440 B. Optionally, the panel  462  can be at least partially opaque and in the form of a metal mesh if desired. 
     The terrarium can include first and second support columns  440 A and  440 B. As shown, these support columns can extend between the top and the base and can fully support the top, rather than the arcuate panel supporting the top. Indeed, the arcuate panels  461 ,  462  can be gapped at their upper edges like the embodiments above. The support columns can further be in the form of hollow tubes so that electrical wires, conduits and/or plumbing  402  can extend upward and through the supports to the internal compartment  450  and/or the top  430 . 
     Generally, as shown in  FIG. 34  each of the support columns can extend at least partially within the internal compartment  450 . One or both of the support columns  440 A and  440 B can be located inward relative to the first arcuate panel  461 , as well as the outer base track  421  and top track  431 , which both simply can be formed from short 1″-3″ tall walls outside the arcuate panel to hold the panel inward relative to it. These elements still, however, form respective top and base channels relative to the top and base. One or both of the support columns can be of a “T” configuration having a capture portion  443  and a stop portion  444 . The capture portion  443  can capture ends of the second arcuate panel  462 , holding it in a fixed configuration relative to the supports. Another capture portion  445 , opposite the portion  443  or the support, can capture an end of an optional short base wall  447  adjacent the base. As shown, the base wall  447  and base track  421  cooperatively form a channel  421 C relative to the base. Although not shown, a similar channel can be formed adjacent the top  430 . The base  440 B can include a stop portion  444  that is placed immediately adjacent the track  421 , and can form a limiting stop to arrest movement of the arcuate panel  461  in the track  421  when the panel is closed as shown in  FIG. 34 . This can be helpful when the arcuate panel  461  is closed with a handle  461 H by engaging the handle and/or the panel  461  against the stop portion  444 . 
     The other support column  440 A can be disposed inwardly from the track  421  so that no part of the support column  440 A stops movement of the arcuate panel  461 , and thus the arcuate panel can slide past the support column  440 A in a direction Y, generally following the track  421  outside it, to form an opening between the support columns  440 A and  440 B where the arcuate panel once was located. This opening can be used access the internal compartment  450 . After access is no longer needed, the arcuate panel  461  can be closed in direction Z until an end  461 E engages the stop  444 , thereby closing off the internal compartment  450 . 
     A fifth alternative embodiment of the terrarium is illustrated in  FIGS. 35-38  and generally designated  510 . This embodiment can be similar in structure, function and operation to the embodiments described herein. For example, the terrarium  510  can include a base  520  and a top  530 , as well as a first  561  closure panel, which is slidable in respective top  531  and base  521  channels or tracks associated with the top and base. The first panel  561  can be opaque or transparent. Although shown as arcuate, this panel can be linear or flat when disposed in the respective channels. The terrarium also can include a second panel  562 . This arcuate panel can be generally fixed between the supports  540 A and  540 B, and can be divided into one or more parts, which can be opaque or transparent as shown. 
     The terrarium can include first and second support columns  540 A and  540 B. As shown, these support columns can extend between the top and the base and can fully support the top, rather than the panels  561  and  562  supporting the top. Indeed, the panels  561 ,  562  can be spaced to form a gap between the top channel bottom wall and the upper edges of these panels, similar to the embodiments above. The support columns can be joined at their upper ends with the top and at their lower ends with the base. Generally, these support columns can support the top a preselected distance above the base like the embodiments above. The support columns can support substantially all the weight of the top, such that the first and second panels  561  and  562  do not support a substantial portion of that weight. In some applications, the support columns can be deleted (not shown), and the second panel  562  can support substantially all of the weight of the top. Optionally, this panel can be reinforced or of a thicker dimension or stronger material than the first panel  561  in such an application. 
     As shown in  FIGS. 35 and 36  each of the support columns can extend at least partially within the internal compartment  550 . One or both of the support columns  540 A and  540 B can be located inward relative to the first panel  561 , as well as the base channel  521  and top channel  531  as described below. The support columns can be constructed from a tubular material as shown in  FIG. 37 , and can include a slot or recess  540 R that receives an end  562 E of the second panel  562 . This end  562 E is shown as an immovable, generally fixed panel that extends between the first support column  550 A and the second support column  550 B. The support columns also can be fixedly secured with fasteners  530 F to the top  530  and/or the base  520 . 
     As shown from a top view of  FIG. 37 , the base  520  and top  530  can be generally in the form of an oval or other curved structures. Likewise, the respective first panel  561  and second panel  562  can be of these curved configurations. In some cases, each of the respective panels can include different radii of curvature. For example, the first panel  561  can be arcuate, having a first curvature with a first radius R 1  at a first end  561 E 1  and a second curvature with a second radius R 2  at a middle portion  561 M and yet another curvature with another radius R 3  at a second distal end  561 E 2 . Likewise, the respective base channel  521  and top channel  531  and the respective walls thereof as described below can have similar differing curvatures and radii. As also shown in  FIG. 37 , the panels  561  and  562  also can define the internal compartment  550  along with the respective base and top. 
     As mentioned above, the top and base can define respective channels. For example, as shown in  FIGS. 35, 37 and 38 , the base  520  can include a first base channel  521 . This first base channel  521  can be in the form of a U-shaped track that extends upward from the base  520 . This first base channel can include a first outer wall  521 OW and an opposing first inner wall  521 IW. The channel can include a first channel bottom wall  521 BW. These different walls can be joined together as an integral piece or can be several components that are fastened, secured or otherwise joined with one another. The top channel  531  can be virtually identical, with a respective outer wall, inner wall and top channel bottom wall there between. The top channel  531  however can generally face and open downward, while the base channel generally faces and opens upward. 
     The base channel  521  can include a base support rim  522 . The base support rim can be constructed from a low friction polymeric material such as nylon, high-density polyethylene or a metal that is coated with a special low friction coating. This base support rim  522  can be in the form of a U-shaped strip that is placed over an upper edge  521 OWE of the outer wall  521 OW of the channel. The base support rim  522  can include an upper most surface  520 U that is configured to directly engage the floater projections  571 ,  572  as described below. The uppermost surface  522 U of the base support rim  522  can be of a rounded or curved, convex cross-section as shown in  FIG. 35 . With such a construction, the base support rim  522  only minimally engages the floater projections  571 ,  572  as described below. Optionally, the uppermost surface  522 U can be a beveled surface where two surfaces terminate at an edge or a point so as to reduce the amount of surface area of the base support rim that engages the respective floater projections. 
     As shown in  FIGS. 35, 37 and 38 , the terrarium  510  includes the first panel  561  as mentioned above. This first panel  561  can be the first arcuate closure panel that extends between the top and the base. The first panel  561  can be slidably disposed in the first top channel  531  and the first base channel  521 , generally between the first base outer wall  521 OW in the first base inner wall  521 IW. The first panel can include a first upper edge  561 U, a first lower edge  561 L, a first end  561 A and a second end  561 B. The first upper edge and first lower edge can be distal from one another. A first side edge  561 S 1  can be disposed at the first end  561 A of the panel, and a second side edge  561 S 2  can be disposed at the second end  560 B. Optionally, these edges can be covered with a protective U-shaped strip  561 P. Optionally, these edges can be open to the environment like the upper and lower edges of the panel. 
     The first lower edge  561 L can be disposed in the base channel  521 , while the first upper edge  561 U can be disposed in the top channel  531 . As shown, the panel  561  is shown in arcuate form, having curvatures with multiple radii of curvature R 1 , R 2  and R 3 . It is to be noted that this panel, as well as the second panel  562  can be installed in the respective top and base channels in a manner such that the panels are bent from a flat, generally planar shape to an arcuate shape as shown to achieve the respective arcuate, multi-curvature configuration to fit in the respective base channel and top channel. As described in connection with the embodiments above, the interfitment of the first panel and the second panel in the respective portions of the base channel and/or top channel forcibly maintains the arcuate or curved shape of those panels. These respective panels are urged outward to engage the respective outer walls of the respective top and base channels, due to the panels naturally tending toward their original flat, planar shape as described in connection with the embodiments above. 
     The first panel  561  can have an arcuate shape when viewed from the top view in  FIG. 37 . This first panel, however, is slidable in the bottom channel  521  and the top channel  531 . As the panel slides in these channels, different portions of the first panel  561  bend as they are guided by the respective base channel and top channel. For example, as the panel  561  is moved in direction M shown in  FIGS. 37 and 35 , the panel  561  and its components, for example, the edges  561 U,  561 L slide within the respective base channel  521  and top channel  531 . As this occurs, the portions of the panel are moved through the channels which are curved and disposed along different radii of curvature, for example, R 1  and R 2  and R 3 . Accordingly, because it is flexible, the panel  561 , bends to convert between and attain these different curvatures as it moves within the channels. As a further example, the portion of the panel near the first and  561 E 1  is initially configured in  FIG. 37  to have a first curvature corresponding to a radius R 1 . As shown in  FIGS. 35 and 38 , as the end or side edge  561 S 1  of the first panel  561  is moved away from the second end or side edge  562 E of the second panel  562 , or generally away from the support column  540 A, thereby exposing an opening  599 O which opens to the internal compartment  550 , that portion adjacent the end, for example as shown in  FIG. 35 , starts to bend to achieve a second curvature R 2 . As that panel  561  continues to open and increase the size of the opening  599 O, the portion of the panel can achieve a third curvature associated with a third radii R 3 . The multiple portions of the arcuate panel also likewise can achieve different curvatures as the panel slides in the respective base channel and top channel. Of course, where the channels are of different shapes than that shown in the figures, the panels can achieve those other curvatures. Further, where the channels are substantially linear or straight, the panel can bend or straighten going into or out from that linear portion of the track. Optionally, the panel can transition from a first curvature to a second curvature and so on. Further optionally, the panel can transition from a first curvature to a linear configuration to a second curvature or configuration, again depending on the shape of the respective channels within which the panel slides. Further optionally, the panel can bend as it slides in the base channel and/or the top channel such that a portion of the panel transitions from a first curved configuration to a second, different curved configuration in different portions of the respective channels. Still further optionally, the panel can bend as it slides in the base channel and/or the top channel such that a portion of the panel transitions from a first curved configuration to a generally linear configuration in different portions of the respective channels. 
     As mentioned above, with reference to  FIGS. 35 and 38 , one or more floater projections  571  and  572  can be included in the terrarium  510  and joined with the first panel  561  or generally a panel that moves or slides relative to the top and base or the top channel and bottom channel. In general, the first floater projection  571  can be configured to engage the base support rim  522  to support a substantial portion of the weight of the first panel  561  such that the first panel lower edge  561 L generally has low friction engagement with the bottom wall  521 BW or generally with the base channel  521 . In some cases, the engagement of the first floater projection  571  is such that its lower edge  561 L floats above the first base channel bottom wall  521 BW. Accordingly, friction between the first panel and the base channel bottom wall is substantially reduced. The first panel  561  can slide from a closed position, shown in  FIG. 37  to a more open position, for example, as shown in  FIGS. 35 and 38 . With this lowered friction, the first panel  561  can be easier to move and slide, as it transitions and bends optionally through the respective base and top channels. In turn, this can facilitate opening of the first panel  561  to expose the opening  599 O and the internal compartment  550 , and to access that internal compartment through the opening. 
     As shown in  FIG. 35 , the first floater projection  571  can include a first elongated flange  573  that extends generally between a base support rim  522  associated with base channel  521 , and a top rim  531 R associated with the top channel  531 . The top rim can be constructed similarly to the base support rim  522  except oriented upside down. The first floater projection  571  can be disposed between the top rim and the base support rim. Optionally, the first elongated flange  573  can form a first handle that is graspable by a user. The first elongated flange can extend substantially vertically along the first panel side edge  561 S 1  at the first end  561 A of the first panel  561 . This flange  573  can extend between the first upper edge  561 U and the first lower edge  560 L. Optionally, the flange can be segmented into different upper and lower portions. Further optionally, the elongated flange can be a single projection that extends adjacent the side edge  56151 , above the lower edge  560 L of the panel  561 . In other cases, the first floater projection  571  can be disposed distal from the respective end  561 A of the first panel  561 . For example, it can be disposed midway between the first and second ends of the panel, depending on the application. 
     As shown in  FIG. 35 , the first elongated flange  573  includes a first lower flange end  574 . This lower flange end  575  can engage or directly engage the base support rim  522  in a sliding manner such that the flange in particular the first lower flange end  574 , can slide along the base support rim  522 , and in particular along the uppermost surface  522 U as the first panel  561  slides in the first base channel  521 . With the first lower flange end engaging the base support rim, the first floater projection can support the weight of the first panel  561  adjacent that first end rim. Therefore, the lower edge  561 L of the panel  561  can be out of engagement with the portion of the bottom wall  521 BW adjacent that first end and/or the first floater projection. 
     As shown in  FIG. 35 , the first lower edge  561 L can be disposed optionally a distance or gap G 5  above the first channel bottom wall  521 BW. This distance or gap optionally can be at least 0.5 mm, at least 1 mm, at least 1.5 mm, at least 2 mm, at least 5 mm, between 0.1 mm and 10 mm, inclusive between 1 mm and 20 mm, inclusive, or between 2 mm and 50 mm inclusive. With this gap or distance G 5  between the lower edge and the bottom wall, friction between these components can be substantially reduced or eliminated. Thus, the primary force against the panel  561  can be generated simply between the panel&#39;s outer surface and the channel outer wall  521 OW and/or the panel&#39;s inner surface and the channel inner wall  521 IW. 
     As mentioned above, one or more additional floater projections can be included or joined with the panel  561  to further support or reduce friction in the base channel and/or top channel. For example, as shown in  FIG. 36 , a second floater projection  572  can be joined with the first panel  561  adjacent the second end  561 B of the first panel  561 . This second floater  572  panel can be substantially similar to the first floater panel with the respective flange and flange lower end, or other type of projection. This second floater projection  572  also can engage the base support rim  522 , distal from the location where the first floater projection  571  engages the base support rim. This second floater projection  572  can support the first panel  561  relative to the first base channel  521 , such that a first lower edge  561 L of the first panel  561  is out of engagement with the first base channel bottom wall  521 BW adjacent the second end  561 B of the first panel  561 . Optionally, where the first floater projection and the second floater projection cooperatively hold the first lower edge  561 L out of engagement with the first base channel bottom wall  521 BW between those floater elements, the distance or gap G 5  can be established between that first lower edge and the first bottom wall, between those elements. Further, the first panel lower edge can be out of engagement with the first base channel bottom wall between the first end and the second end of the first panel with such support. Of course, other floater projections can be included between the ends to position the first panel lower edge out of engagement with the first base channel bottom wall or otherwise establish a gap or distance G 5  between those elements. 
     As mentioned above, the first floater projection  571  can form a handle or graspable portion that can be manually grasped by a user adjacent the first end  561 A of the panel  561 . The user can slide the first floater projection  571  on or relative to the base support REM and thereby slide the first panel relative to the first base channel  521  from a closed position to an open position relative to an opening  599 O. In transitioning from the closed position, shown in  FIG. 37 , to an open position, shown in  FIG. 38 , the opening  599 O can enlarge to gain further exposure and access to the internal compartment  550 . Is also to be noted that the second floater projection  572 , where included, also can form a handle that can be used to slide the first panel  561  relative to the base channel  521  and the top channel  531 , and thereby open and/or close the first panel relative to the opening  599 O and/or the internal compartment  550 . 
     As shown in  FIG. 36 , the first panel upper edge  561 U likewise can be slidably disposed in a top channel  531 , which includes an inner wall and an outer wall, similar to the base channel described below. As illustrated, the first panel upper edge  561 U can be spaced a gap or distance G 6  from the first top channel bottom wall  531 BW. This gap or distance G 6  can be similar to the gap G 5  described above. The upper end  575  of the floater projection  572  can engage the top rim  531 R of the top channel  531  to prevent or impair that first panel upper edge  561 U from engaging the bottom wall  531 BW of the top channel. This, in turn, can reduce the amount of friction between the upper edge  561 U and the bottom wall of the top channel  531 BW. Optionally, the first and second floater projections are disposed movably and slidably between the top rim and the base support rim. Further optionally, the first and second floater projections can guide the panel along the base support rim to reduce friction between the panel lower edge and a bottom wall of the channel. Again, this can reduce friction and facilitate opening of the panel or otherwise moving the panel relative to the respective channels. 
     Directional terms, such as “vertical,” “horizontal,” “top,” “bottom,” “upper,” “lower,” “inner,” “inwardly,” “outer” and “outwardly,” are used to assist in describing the invention based on the orientation of the embodiments shown in the illustrations. The use of directional terms should not be interpreted to limit the invention to any specific orientation(s). 
     In addition, when a component, part or layer is referred to as being “joined with,” “on,” “engaged with,” “adhered to,” “secured to,” or “coupled to” another component, part or layer, it may be directly joined with, on, engaged with, adhered to, secured to, or coupled to the other component, part or layer, or any number of intervening components, parts or layers may be present. In contrast, when an element is referred to as being “directly joined with,” “directly on,” “directly engaged with,” “directly adhered to,” “directly secured to,” or “directly coupled to” another element or layer, there may be no intervening elements or layers present. Other words used to describe the relationship between components, layers and parts should be interpreted in a like manner, such as “adjacent” versus “directly adjacent” and similar words. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. 
     The above description is that of current embodiments of the invention. Various alterations and changes can be made without departing from the spirit and broader aspects of the invention as defined in the appended claims, which are to be interpreted in accordance with the principles of patent law including the doctrine of equivalents. This disclosure is presented for illustrative purposes and should not be interpreted as an exhaustive description of all embodiments of the invention or to limit the scope of the claims to the specific elements illustrated or described in connection with these embodiments. For example, and without limitation, any individual element(s) of the described invention may be replaced by alternative elements that provide substantially similar functionality or otherwise provide adequate operation. This includes, for example, presently known alternative elements, such as those that might be currently known to one skilled in the art, and alternative elements that may be developed in the future, such as those that one skilled in the art might, upon development, recognize as an alternative. Further, the disclosed embodiments include a plurality of features that are described in concert and that might cooperatively provide a collection of benefits. The present invention is not limited to only those embodiments that include all of these features or that provide all of the stated benefits, except to the extent otherwise expressly set forth in the issued claims. Any reference to claim elements in the singular, for example, using the articles “a,” “an,” “the” or “said,” is not to be construed as limiting the element to the singular. Any reference to claim elements as “at least one of X, Y and Z” is meant to include any one of X, Y or Z individually, and any combination of X, Y and Z, for example, X, Y, Z; X, Y; X, Z; and Y, Z.