Patent Publication Number: US-2021164287-A1

Title: Methods of assembling thermally enhanced multi-component glass doors and windows

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is a continuation of U.S. patent application Ser. No. 16/168,305, filed on Oct. 23, 2018 which is a continuation-in-part of U.S. patent application Ser. No. 15/791,471, filed on Oct. 24, 2017, and granted as U.S. Pat. No. 10,107,027, the disclosures of which are hereby incorporated by reference in their entirety. 
    
    
     FIELD 
     The field relates to building components and, in particular, glass doors and windows that include a pocket defined by glass panes and a thermal break aligned with the pocket. 
     BACKGROUND 
     Windows and glass doors typically include a frame supporting one or more glass panes. The frame may be constructed of various materials that provide structural strength or a desired aesthetic appearance. However, such materials may be difficult to connect to each other and may increase the cost of the door. In addition, prior windows and doors have not been completely satisfactory in preventing heat transfer between an interior and exterior of a structure. 
     This section is intended to introduce the reader to various aspects of art that may be related to various aspects of the disclosure, which are described and/or claimed below. This discussion is believed to be helpful in providing the reader with background information to facilitate a better understanding of the various aspects of the present disclosure. Accordingly, it should be understood that these statements are to be read in this light, and not as admissions of prior art. 
     SUMMARY 
     In one aspect, a method of assembling a door includes positioning an insulating material in a thermal break defined by a frame intermediate a first side and a second side of the door. The method also includes connecting a first glass pane to a second glass pane to form an insulated glass unit. A pocket is defined between the first glass pane and the second glass pane. The method further includes positioning the insulated glass unit in the frame and aligning the thermal break and the pocket such that a distance between a central plane of the thermal break and a central plane of the pocket is in a range of up to about 0.75 inches when the door is in a closed position. The method also includes connecting a cladding to the frame. The frame includes a first material visible on the first side of the door. The cladding includes a second material visible on the second side of the door. The frame defines a cavity that extends between the first side and the second side and is configured to inhibit moisture from the first side contacting the second material. 
     In another aspect, a method of assembling a door includes positioning an insulating material in a first thermal break defined by a frame intermediate a first side and a second side of the door and connecting a first glass pane to a second glass pane to form an insulated glass unit. A pocket is defined between the first glass pane and the second glass pane. A central plane extends through the pocket and is spaced equal distances from the first glass pane and the second glass pane. The method also includes positioning a panel frame in the frame. The panel frame defines a second thermal break intermediate the first side and the second side. The method further includes connecting the insulated glass unit to the panel frame and aligning the second thermal break and the pocket such that the central plane extends through the second thermal break. The first thermal break, the second thermal break, and the pocket define a continuous thermal break when the door is in a closed position. The method includes connecting a cladding to the frame. The frame includes a first material visible on the first side of the door and a second material visible on the second side of the door. The frame defines a cavity that extends between the first side and the second side and is configured to inhibit moisture from the first side contacting the second material. 
     In yet another aspect, a method of assembling a building component includes connecting a first glass pane to a second glass pane to form an insulated glass unit. The first glass pane and the second glass pane define a pocket therebetween. A central plane extends through the pocket and is spaced equal distances from the first glass pane and the second glass pane. The method further includes positioning the insulated glass unit in a frame. The frame includes a first material visible on a first side of the building component. A thermal break is defined by a middle portion of the frame and circumscribes the insulated glass unit. The middle portion of the frame supports the insulated glass unit. The method also includes connecting cladding including a second material to the frame. The second material is visible on a second side of the building component. The frame defines a cavity that extends between the first side and the second side and is configured to inhibit moisture from the first side contacting the second material. The method also includes aligning the thermal break and the pocket such that the central plane extends through a middle portion of the thermal break. The thermal break and the pocket define a continuous thermal break extending through the building component. 
     Various refinements exist of the features noted in relation to the above-mentioned aspects of the present disclosure. Further features may also be incorporated in the above-mentioned aspects of the present disclosure as well. These refinements and additional features may exist individually or in any combination. For instance, various features discussed below in relation to any of the illustrated embodiments of the present disclosure may be incorporated into any of the above-described aspects of the present disclosure, alone or in any combination. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an elevation view of an example door. 
         FIG. 2  is an exploded assembly view of the door shown in  FIG. 1 . 
         FIG. 3  is a sectional foreshortened view of the door shown in  FIG. 1 , taken along section line A-A. 
         FIG. 4  is a sectional foreshortened view of a portion of the door shown in  FIG. 1 , taken along section line B-B. 
         FIG. 5  depicts a flow chart of an example method of assembling the door shown in  FIG. 1 . 
         FIG. 6  is a schematic sectional view showing temperature zones of the door shown in  FIG. 1 , taken along section line B-B. 
         FIG. 7  is an elevation view of an example door including at least one sliding panel. 
         FIG. 8  is a sectional foreshortened view of a portion of the door shown in  FIG. 7 , taken along section line C-C. 
         FIG. 9  is a sectional foreshortened view of a portion of the door shown in  FIG. 7 , taken along section line D-D. 
         FIG. 10  is an elevation view of an example door including multiple sliding panels. 
         FIG. 11  is a sectional foreshortened view of a portion of the door shown in  FIG. 10 , taken along section line E-E. 
         FIG. 12  is a sectional foreshortened view of a portion of the door shown in  FIG. 10 , taken along section line F-F. 
         FIG. 13  is an elevation view of an example window. 
         FIG. 14  is an exploded assembly view of the window shown in  FIG. 13 . 
         FIG. 15  is an enlarged perspective view of the window shown in  FIG. 13  with a portion removed to show corner keys, the window being cut away along section line G-G. 
         FIG. 16  is an enlarged side view of a portion of the window shown in  FIG. 13 , the window being cut away along section line G-G. 
         FIG. 17  is an enlarged perspective view of a portion of the window shown in  FIG. 13 , the window being cut away along section line G-G. 
         FIG. 18  is an enlarged exterior view of a portion of the window shown in  FIG. 13 , the window being cut away along section line G-G. 
         FIG. 19  is an enlarged interior view of a portion of the window shown in  FIG. 13 , the window being cut away along section line G-G. 
         FIG. 20  is a sectional view of a portion of the window shown in  FIG. 13 , taken along section line H-H. 
         FIGS. 21A-D  depict a flow chart of an example method of assembling the window shown in  FIG. 13 . 
         FIG. 22  is a schematic sectional view showing temperature zones of the window shown in  FIG. 13 , taken along section line H-H. 
         FIG. 23  is an elevation view of an example window including sashes. 
         FIG. 24  is a sectional view of a portion of an example window including cladding. 
     
    
    
     Corresponding reference characters indicate corresponding parts throughout the drawings. 
     DETAILED DESCRIPTION 
     Referring to  FIGS. 1 and 2 , an example door is indicated generally by  100 . The door  100  includes an insulated glass unit  102  and a frame  106 . The insulated glass unit  102  includes a first glass pane  108  and a second glass pane  110 . The second glass pane  110  is spaced from the first glass pane  108  such that the first glass pane and the second glass pane define a pocket  112  therebetween. A central plane  114  extends through the pocket  112  and is spaced equal distances from the first glass pane  108  and the second glass pane  110 . The pocket  112  may be filled with an insulating material such as argon gas. In other embodiments, the door  100  may include any insulated glass unit  102  that enables the door to function as described. For example, in some embodiments, a third glass pane may be disposed between the first glass pane  108  and the second glass pane  110  and generally aligned with the central plane  114 . 
     In addition, the door  100  includes a panel frame  124  circumscribing the insulated glass unit  102 . The panel frame  124  includes a top rail  125 , a bottom rail  126 , and stiles  127 . The rails  125 ,  126  extend horizontally and the stiles  127  extend vertically. The insulated glass unit  102  may be secured to the top rail  125 , the bottom rail  126 , and the stiles  127  by a glazing stop. In the example, the top rail  125 , the bottom rail  126 , the stiles  127 , and the insulated glass unit  102  may be connected to the frame  106  such that the insulated glass unit  102 , the top rail  125 , the bottom rail  126 , and the stiles  127  are positionable relative to the frame  106 . For example, in some embodiments, the insulated glass unit  102 , the top rail  125 , the bottom rail  126 , and the stiles  127  may be pivotable and/or slidable relative to the frame  106 . The door  100  may include hardware such as a handle  129  and hinges  131  (shown in  FIG. 3 ) to enable the insulated glass unit  102  and the panel frame  124  to be positionable relative to the frame  106 . In some embodiments, the door  100  may include rollers, locks, and snubbers. In other embodiments, the insulated glass unit  102 , the top rail  125 , the bottom rail  126 , and the stiles  127  may be positioned in the frame  106  in any manner that enables the door  100  to operate as described. For example, in some embodiments, the door  100  includes two or more panels that are movable relative to the frame  106 . Accordingly, the door may be, for example and without limitation, a swing door, a sliding door, a multi-slide door, a bi-fold door, and a multi-fold door. 
     In reference to  FIG. 2 , the frame  106  includes a sill  130 , a header  132 , jambs  134 , cladding  136  (shown in  FIGS. 4 and 5 ), and corner keys  138 . In the example, the sill  130  and the header  132  extend horizontally and define a width of the door  100 . The jambs  134  extend vertically and define a height of the door  100 . Together the sill  130 , the header  132  and the jambs  134  are configured to circumscribe and support the first glass pane  108  and the second glass pane  110 . In the illustrated embodiment, the frame  106  is rectangular. A threshold may extend across at least a portion of the sill  130 . In other embodiments, the door  100  may include any frame  106  that enables the door to function as described. 
     In reference to  FIGS. 2-4 , each corner key  138  is sized and shaped to extend into openings  145  in the sill  130 , the header  132 , and the jambs  134 . Also, the door  100  may include screw or fastener connection assemblies to connect the sill  130 , the header  132 , and the jambs  134  together. In addition, the corner keys  138  are shaped to connect the sill  130 , the header  132 , and the jambs  134  in conjunction with the screw connection assemblies such that the sill, the header and the jambs extend at angles relative to each other. For example, in the illustrated embodiment, each corner key  138  defines a right angle. In other embodiments, the frame  106  may include any corner keys  138  that enable the door  100  to function as described. 
     As shown in  FIG. 4 , in this embodiment, the cladding  136  includes a face  140  and a cap  142 . In other embodiments, the door  100  may include any cladding  136  that enables the door to function as described. For example, in some embodiments, the cladding  136  includes an extension jamb. 
     The face  140  is configured to connect to the header  132 , and the jambs  134 . The face  140  includes plates that cover surfaces of the header  132 , and the jambs  134 . The cap  142  attaches to the face  140 . The cladding  136  may be connected to the header  132 , and the jambs  134  by a key arranged to engage a keyway. The key and the keyway allow the cladding  136  to move relative to the header  132 , and the jambs  134 . As a result, the key and the keyway enable the cladding  136  to be a different material than the header  132 , and the jambs  134 . 
     In addition, in this embodiment, the external frame  106  and the interior cladding  136  are designed to prevent the cladding  136  from coming into contact with moisture that could infiltrate the door  100  from the exterior. For example, the door  100  may include a cavity  147  extending from the first side  120  to the second side  122  when the door is in a closed position and structurally separating the external frame  106  and the interior cladding  136 . Openings  149  may be defined in the sill  130  and/or the jambs  134  and allow moisture to exit the cavity  147 . The openings  149  are positioned to inhibit moisture moving to the second side  122  from the first side  120 . Specifically, the opening  149  on the first side  120  is positioned on a lower portion of the cavity  147 . The opening  149  on the second side  122  is positioned on an upper side of the cavity  147 . Accordingly, the frame  106  is configured to prevent damage to the cladding  136  from moisture intruding through the door  100 . In other embodiments, the door  100  may include any cavity that enables the door to function as described. 
     In this embodiment, weatherstripping  148  may be positioned along the door opening. In some embodiments, the weatherstripping  148  may include an inner strip and an outer strip extending along the opening on opposite sides of the door  100 . Accordingly, the weatherstripping  148  may inhibit moisture and/or wind penetrating around the door and flowing to the interior when the door  100  is in a closed position. In addition, the weatherstripping  148  dampen the transmission of sound waves through the door  100 . 
     The frame  106  may include one or more thermal seals  151 . For example, the thermal seals  151  may be connected to the frame  106 , the insulated glass unit  102 , the top rail  125 , the bottom rail  126 , and the stiles  127 . The thermal seals  151  extend through the cavity  147  and inhibit thermal transfer through the cavity. In other embodiments, the frame  106  may include any seals that enable the frame  106  to function as described. 
     The frame  106  may include any suitable materials. For example, in this embodiment, the jambs  134  include a first material such as aluminum. The cladding  136  includes a second material such as wood. Accordingly, the frame  106  includes at least two different materials. In other embodiments, the frame  106  may include any material such as, for example and without limitation, metal, wood, vinyl, and fiberglass. 
     Also, in this embodiment, the door  100  includes panel cladding  156 . The panel cladding  156  includes the second material and is connected to the top rail  125 , the bottom rail  126 , and the stiles  127  by a key and a keyway. In other embodiments, the door  100  includes any panel cladding that enables the door to function as described. 
     In the illustrated embodiment, the first material is visible on a first side  120  of the door  100  and the second material is visible on a second side  122  of the door. The different materials provide different characteristics for the door  100 . For example, the first material may increase the strength of the door  100  and the second material may provide a desired appearance for the door. In this embodiment, the door  100  is positioned on a structure such that the second side  122  is on the interior and the first side  120  is on the exterior of the structure. Accordingly, the first material is visible on the exterior and the second material is visible on the interior of the structure. 
     In reference to  FIG. 4 , the frame  106  further defines a frame thermal break  128  intermediate the first side  120  and the second side  122 . The frame thermal break  128  has a width in a range of about 1 inch (in.) to about 2 in. The frame thermal break  128  is aligned with the pocket  112  such that the central plane  114  extends through a middle portion of the frame thermal break  128 . For example, in some embodiments, a distance  135  between a central plane  133  of the frame thermal break  128  and the central plane  114  of the pocket  112  is in a range up to about 0.75 in. In this embodiment, the distance between the central plane  133  and the central plane  114  is less than about 0.5 in. Accordingly, the frame thermal break  128  and the pocket  112  provide a substantially continuous thermal break extending through the door  100  to reduce the transfer of heat through the door. In other embodiments, the door  100  may have any frame thermal break  128  that enables the door to operate as described. 
     In addition, the top rail  125 , the bottom rail  126 , and the stiles  127  define a panel thermal break  150  intermediate the first side  120  and the second side  122 . The panel thermal break  150  is aligned with the pocket  112  such that the central plane  114  extends through the panel thermal break when the door is in a closed position. For example, in some embodiments, a distance between a central plane of the thermal break  150  and the central plane  114  of the pocket  112  is in a range up to about 0.75 in. In this embodiment, the panel thermal break  150  and the pocket  112  have a common central plane  114  when the door is in a closed position. In other embodiments, the door  100  may include any thermal break that enables the door to function as described. For example, in some embodiments, the top rail  125 , the bottom rail  126 , and the stiles  127  do not necessarily include a thermal break  150 . In further embodiments, the door  100  includes three or more thermal breaks. 
     An insulating material having a thermal conductance less than the first material and/or the second material may be positioned within the frame thermal break  128  and the panel thermal break  150 . For example, the insulating material may have a thermal conductance in a range of about 0.21 British thermal units per hour square feet degrees Fahrenheit (Btu/(hr·ft 2 ·° F.)) to about 0.840 Btu/(hr·ft 2 ·° F.). The insulating material substantially fills the frame thermal break  128  and extends between portions of the frame  106  including the first material and/or the second material to reduce heat transfer through the door. In other embodiments, the door  100  may include any insulating material that enables the door to operate as described. 
     In reference to  FIGS. 1-5 , a method  200  of assembling the door  100  includes aligning  226  the frame thermal break  128  and the pocket  112  such that the central plane  114  of the pocket extends through the frame thermal break. 
     Accordingly, the frame thermal break  128  and the pocket  112  provide a continuous thermal break through the door  100  to inhibit heat transfer through the door. In some embodiments, extrusions for the frame  106  are designed to provide alignment of the frame thermal break  128  and the pocket  112 . In other embodiments, the frame thermal break  128  and the pocket  112  may be aligned in any manner that enables the door  100  to operate as described. 
     Also, the method includes positioning  201  insulating material in the frame thermal break  128  defined by the frame  106  intermediate the first side  120  and the second side  122 . In addition, the method includes fabricating  202  components for the frame  106 , the face  140 , and the cap  142 . For example, the sill  130 , the header  132 , and the jambs  134  may be cut for the frame  106  from a material such as aluminum. In addition, the sill  130 , the header  132 , and/or the jambs  134  may be cut for the face  140  and the cap  142  of the cladding  136  from a material such as wood. In other embodiments, the frame  106  may be fabricated in any manner that enables the frame to function as described. In some embodiments, components such as the cap  142  may be omitted. 
     The frame  106  may be assembled by positioning  204  each corner key  138  into the opening  145  in one of the header  132  and the sill  130  and into the opening  145  in one of the jambs  134  to form corners of the frame. In some embodiments, the header  132 , the sill  130 , and/or the jambs  134  are connected using fasteners in addition to or in place of the corner keys  138 . With the corner keys  138  and/or fasteners maintaining the frame  106  in position, the sill  130 , the header  132 , and the jambs  134  may be connected  208  at the corners and installed in a wall of a structure. 
     After the frame  106  is assembled, the door  100  may be prepared for glazing. For example, sealant may be applied to the frame  106  and the insulated glass unit  102  may be positioned on the frame  106 . Stops may be positioned on the frame  106  to secure the insulated glass unit  102  and the door  100  may be prepared for cladding. In other embodiments, the insulated glass unit  102  may be secured to the frame  106  in any suitable manner. 
     To assemble doors  100  that are operable (i.e., positionable between opened and closed positions), the insulated glass unit  102  may be supported by the panel frame  124  that is moveably positioned in the frame  106 . For example, hardware and seals are attached  228  to the frame  106 . The panel frame  124  is positioned  229  in the frame  106 . The panel frame  124  may be positioned such that it is movable, e.g., pivotable and/or slidable, relative to the frame  106 . In some embodiments, the insulated glass unit  102  is secured in the panel frame  124  prior to connecting the insulated glass unit  102  to the frame  106 . For example, the door  100  is conveyed  230  into a glazing station and the insulated glass unit  102  is positioned  232  in the panel frame  124 . In some embodiments, setting block chairs may be positioned on the panel frame  124  and used to support the insulated glass unit  102  in the panel frame  124 . The door  100  is conveyed  234  out of the glazing station and glazing stops are fabricated  236  and positioned  238  on the door  100 . In some embodiments, some of the glass panes of the door  100  may be fixed. For the fixed glass panes, the panel frame  124  may be positioned and secured such that the position of the glass pane is fixed relative to the frame  124 . 
     In some embodiments, the panels are assembled at an assembly site and shipped to the installation site where the frame  106  is assembled. Accordingly, the panels may be positioned in the frame  106  at the installation site. For example, at least some sliding glass panels are assembled at an assembly site and positioned in frames  106  that are assembled at a remote installation site. 
     In addition, the method  200  includes positioning  206  the cladding face  140  on the header  132  and the jambs  134  and connecting  210  the cladding face  140  to the frame  106 . In some embodiments, the cladding face  140  may be secured to the header  132  and the jambs  134  at the same time that the header  132  and the jambs  134  are secured together. In other embodiments, the header  132  and the jambs  134  are secured together at an assembly site and the cladding face  140  and any other trim or extension jambs may be connected to the door  100  at an installation site. 
     The cladding face  140  may be secured using nails. The corners of the frame  106  may be sealed, for example, by at least partially filling the openings  145  with sealant if the corner keys are used. In addition, any seams in the corners may be sealed. Alternatively or in addition, molded gaskets may be used to seal the frame  106 . The cap  142  may be connected  215  to the face  140  after the face is connected to the frame  106 . For example, the frame  106  may be conveyed into a nailer station and the cap  142  nailed to the face  140 . In other embodiments, the cap  142  and the face  140  are provided as a single piece. After connecting  215  the face  140 , the frame  106  may be prepared for hardware attachment. 
     In some embodiments, the frame  106  is mounted in a wall of a structure such that first side  120  is positioned on the exterior of the structure and the second side  122  is positioned on the interior of the structure. Accordingly, the cladding  136  may be connected to the second side  122  of the door such that the cladding  136  is visible on the interior of the structure. In other embodiments, the cladding  136  may be connected to the sill  130 , the header  132 , and/or the jambs  134  in any manner that enables the door  100  to operate as described. 
     In other embodiments, the frame  106  may be assembled in any suitable manner using, for example and without limitation, adhesives, fasteners, and/or any other suitable attachment means. 
     The steps of the method illustrated and described herein are in a specific order that provides advantages for the described embodiments. In other embodiments, the method may be performed in any order and the embodiments may include additional or fewer operations than those described herein. For example, it is contemplated that executing or performing a particular operation before, contemporaneously with, or after another operation is within the scope of some aspects of the description. 
       FIG. 6  is a sectional view showing temperature zones of the door  100 . For example, the door  100  may be positioned in the wall of a structure such that the first side  120  is on an exterior of the structure and the second side  122  is on an interior of the structure. In the illustrated embodiment, the first side  120  has a first temperature and the second side  122  has a second temperature. In this embodiment, the second temperature is greater than the first temperature because the interior of the structure is warmer than the exterior. Accordingly, heat has a tendency to flow from the interior of the structure towards the exterior. In other embodiments, the exterior may be warmer than the interior. 
     As shown in  FIG. 6 , the frame thermal break  128 , the panel thermal break  150 , and the pocket  112  define a substantially continuous thermal break  154  extending through the door  100 . The thermal break  154  interrupts the transfer of heat from the first side  120  to the second side  122 . Accordingly, the second side  122  is able to have a temperature that is significantly less than the temperature of the first side  120 . As a result, the door  100  reduces the transfer of heat between the exterior and the interior of structure. 
     In reference to  FIGS. 7-9 , a door  300  includes a first insulated glass unit  302 , a second insulated glass unit  304 , and a frame  306 . The first insulated glass unit  302  includes a first glass pane  308  and a second glass pane  310 . The second glass pane  310  is spaced from the first glass pane  308  such that the first glass pane and the second glass pane define a pocket  312  therebetween. A central plane  314  extends through the pocket  312  and is spaced equal distances from the first glass pane  308  and the second glass pane  310 . The second insulated glass unit  304  includes a third glass pane  316  and a fourth glass pane  318 . The fourth glass pane  318  is spaced from the third glass pane  316  such that the third glass pane and the fourth glass pane define a pocket  320  therebetween. A central plane  322  extends through the pocket  320  and is spaced equal distances from the third glass pane  316  and the fourth glass pane  318 . The pockets  312 ,  320  may be filled with a gas such as argon to reduce the transfer of heat through the door  300 . In other embodiments, the door  300  may include any insulated glass unit that enables the door to function as described. 
     In addition, the door  300  includes a first panel frame  324  and a second panel frame  326 . The first panel frame  324  circumscribes the first insulated glass unit  302  and the second panel frame  326  circumscribes the second insulated glass unit  304 . In the example, the first insulated glass unit  302  and the first panel frame  324  form a first panel and the second insulated glass unit  304  and the second panel frame  326  form a second panel. In other embodiments, the door  300  may include any panels that enable the door to function as described. 
     In this embodiment, at least the first panel frame  324  and the first insulated glass unit  302  is configured to slide relative to the frame  106 . The central plane  314  of the first insulated glass unit  302  is offset from the central plane  322  of the second insulated glass unit  304  to enable at least one of the first panel and the second panel to move relative to the other. Accordingly, the door  300  is a sliding door. In other embodiments, the door  300  may have any panels that enable the door  300  to function as described. For example, in some embodiments, the central plane  314  of the first insulated glass unit  302  and the central plane  322  of the second insulated glass unit  304  may be unaligned and extend at an angle relative to each other when at least one of the first panel and the second panel is in an opened position. In further embodiments, the first panel frame  324  and/or the second panel frame  326  may be omitted and the first insulated glass unit  302  and/or the second insulated glass unit  304  may be fixed relative to the frame  306 . 
     The door  300  includes at least one thermal break extending between first and second sides of the frame and generally circumscribing the first insulated glass unit  302  and the second insulated glass unit  304 . Specifically, the frame  306  includes a first frame thermal break  328  and a second frame thermal break  329 . The first insulated glass unit  302  and the first frame thermal break  328  are positioned such that a distance  333  between the central plane  314  and a central plane of the first frame thermal break  328  is less than about 0.75 in. The second insulated glass unit  304  and the second frame thermal break  329  are positioned such that a distance  335  between the central plane  322  and a central plane of the second frame thermal break  329  is less than about 0.75 in. The first panel frame  324  includes a first panel thermal break  330  and the second panel frame  326  includes a second panel thermal break  332 . The first insulated glass unit  302  and the first panel thermal break  330  are positioned such that the central plane  314  extends through the first panel thermal break  330 . The second insulated glass unit  304  and the second panel thermal break  332  are positioned such that the central plane  322  extends through the second panel thermal break  332 . Accordingly, the first insulated glass unit  302 , the second insulated glass unit  304 , and the thermal breaks  328 ,  329 ,  330 ,  332  provide at least one continuous thermal break extending through the door  300 . 
     In reference to  FIGS. 10-12 , a door  400  includes a first insulated glass unit  402 , a second insulated glass unit  404 , a third insulated glass unit  406 , a fourth insulated glass unit  408 , and a frame  410 . The first insulated glass unit  402  includes a first glass pane  412  and a second glass pane  414 . The second glass pane  414  is spaced from the first glass pane  412  such that the first glass pane and the second glass pane define a pocket  416  therebetween. 
     A central plane  418  extends through the pocket  416  and is spaced equal distances from the first glass pane  412  and the second glass pane  414 . The second insulated glass unit  404  includes a third glass pane  420  and a fourth glass pane  422 . The fourth glass pane  422  is spaced from the third glass pane  420  such that the third glass pane and the fourth glass pane define a pocket  424  therebetween. 
     A central plane  426  extends through the pocket  424  and is spaced equal distances from the third glass pane  420  and the fourth glass pane  422 . The third insulated glass unit  406  includes a fifth glass pane  428  and a sixth glass pane  430 . The sixth glass pane  430  is spaced from the fifth glass pane  428  such that the fifth glass pane and the sixth glass pane define a pocket  432  therebetween. 
     A central plane  434  extends through the pocket  432  and is spaced equal distances from the fifth glass pane  428  and the sixth glass pane  430 . The fourth insulated glass unit  408  includes a seventh glass pane  436  and an eighth glass pane  438 . The eighth glass pane  438  is spaced from the seventh glass pane  436  such that the seventh glass pane and the eighth glass pane define a pocket  440  therebetween. A central plane  442  extends through the pocket  440  and is spaced equal distances from the seventh glass pane  436  and the eighth glass pane  438 . The pockets  416 ,  424 ,  432 ,  440  may be filled with a gas such as argon to reduce the transfer of heat through the door  400 . In other embodiments, the door  400  may include any insulated glass unit that enables the door to function as described. 
     In addition, the door  400  includes a first panel frame  444 , a second panel frame  446 , a third panel frame  448 , and a fourth panel frame  450 . The first panel frame  444  circumscribes the first insulated glass unit  402 . The second panel frame  446  circumscribes the second insulated glass unit  404 . The third panel frame  448  circumscribes the third insulated glass unit  406 . The fourth panel frame  450  circumscribes the fourth insulated glass unit  408 . In this embodiment, the first panel frame  444 , the second panel frame  446 , the third panel frame  448 , and the fourth panel frame  450  are configured to slide relative to the frame  106 . The central planes  418 ,  426 ,  434 ,  442  are offset from each other to enable the first panel frame  444 , the second panel frame  446 , the third panel frame  448 , and the fourth panel frame  450  to move relative to each other. As shown and described, the door  400  of this embodiment is a sliding door, but in other embodiments, the door  400  may have any number of panels, and other configurations, that enable the door  300  to function as described. 
     The door  400  includes at least one thermal break extending between first and second sides of the frame and generally circumscribing the first insulated glass unit  402 , the second insulated glass unit  404 , the third insulated glass unit  406 , and the fourth insulated glass unit  408 . Specifically, the frame  410  includes a first frame thermal break  452 , a second frame thermal break  454 , a third frame thermal break  456 , and a fourth frame thermal break  458 . 
     The first insulated glass unit  402 , the second insulated glass unit  404 , the third insulated glass unit  406 , the fourth insulated glass unit  408 , and the thermal breaks  452 ,  454 ,  456 ,  458  are positioned such that a distance between each of the central planes  418 ,  426 ,  434 ,  442  and a central plane of at least one of the thermal breaks  452 ,  454 ,  456 ,  458  is less than about 0.75 in. 
     The first panel frame  444 , the second panel frame  446 , the third panel frame  448 , and the fourth panel frame  450  each include a panel thermal break  460 . The first insulated glass unit  402 , the second insulated glass unit  404 , the third insulated glass unit  406 , the fourth insulated glass unit  408 , and the thermal breaks  460  are positioned such that each central plane  418 ,  426 ,  434 ,  442  extends through the thermal break  460  of the respective panel frame  444 ,  446 ,  448 ,  450 . Accordingly, the first insulated glass unit  402 , the second insulated glass unit  404 , the third insulated glass unit  406 , the fourth insulated glass unit  408 , and the thermal breaks  452 ,  454 ,  456 ,  458 ,  460  provide a continuous thermal break extending through the door  400 . 
       FIG. 13  is an elevation view of an example window  500 .  FIG. 14  is an exploded assembly view of the window  500 . The window  500  includes an insulated glass unit  502  and a frame  506 . The insulated glass unit  502  includes a first glass pane  508  and a second glass pane  510 . The second glass pane  510  is spaced from the first glass pane  508  such that the first glass pane and the second glass pane define a pocket  512  therebetween. A central plane  514  extends through the pocket  512  and is spaced equal distances from the first glass pane  508  and the second glass pane  510 . The pocket  512  may be filled with an insulating material such as argon gas. In other embodiments, the window  500  may include any insulated glass unit  502  that enables the window to function as described. For example, in some embodiments, a third glass pane may be disposed between the first glass pane  508  and the second glass pane  510  and generally aligned with the central plane  514 . 
     In addition, the window  500  includes a sash frame  524 . The sash frame  524  circumscribes the insulated glass unit  502 . For example, the insulated glass unit  502  may be secured in the sash frame  524  by a glazing stop  507  (shown in  FIG. 20 ). In the example, the insulated glass unit  502  and the sash frame  524  form a sash  526  of the window  500 . The sash  526  may be connected to the frame  506  such that the insulated glass unit  502  and the sash frame  524  are positionable relative to the frame  506 . For example, in some embodiments, the sash frame  524  and the insulated glass unit  502  may be pivotable and/or slidable relative to the frame  506 . In other embodiments, the first insulated glass unit  502  and the sash frame  524  may be positioned in the frame  506  in any manner that enables the window  500  to operate as described. For example, in some embodiments, the window includes two or more sashes  526  that are movable relative to the frame  506 . In further embodiments, the sash frame  524  may be omitted and the insulated glass unit  502  may be fixed to the frame  506 . 
     In reference to  FIG. 14 , the frame  506  includes a sill  530 , a header  532 , jambs  534 , cladding  536  (shown in  FIGS. 16 and 17 ), and corner keys  538 . In the example, the sill  530  and the header  532  extend horizontally and define a width of the window  500 . The jambs  534  extend vertically and define a height of the window  500 . Together the sill  530 , the header  532  and the jambs  534  are configured to circumscribe and support the first glass pane  508  and the second glass pane  510 . In the illustrated embodiment, the frame  506  is rectangular. In other embodiments, the window  500  may include any frame  506  that enables the window to function as described. 
     In reference to  FIGS. 14-16 , each corner key  538  is sized and shaped to extend into openings  545  in the sill  530 , the header  532 , and the jambs  534 . In addition, the corner keys  538  are shaped to connect the sill  530 , the header  532 , and the jambs  534  such that the sill, the header and the jambs extend at angles relative to each other. For example, in the illustrated embodiment, each corner key  538  defines a right angle. In other embodiments, the frame  506  may include any corner keys  538  that enable the window  500  to function as described. 
     As shown in  FIG. 20 , in this embodiment, the cladding  536  includes a face  540 , a cap  542 , and an extension jamb  553 . In other embodiments, the window  500  may include any cladding  536  that enables the window to function as described. For example, in some embodiments, the extension jamb  553  is omitted. 
     The face  540  is configured to connect to the sill  530 , the header  532 , and the jambs  534 . The face  540  includes plates that cover surfaces of the sill  530 , the header  532 , and the jambs  534 . The cap  542  attaches to the face  540 . The cladding  536  is connected to the sill  530 , the header  532  (shown in  FIG. 13 ), and the jambs  534  (shown in  FIG. 13 ) by a key  544  arranged to engage a keyway  546 . The key  544  and the keyway  546  allow the cladding  536  to move relative to the sill  530 , the header  532 , and the jambs  534 . As a result, the key  544  and the keyway  546  enable the cladding  536  to be a different material than the sill  530 , the header  532 , and the jambs  534 . 
     In this embodiment, the face  540  includes the keyway  546 . The keyway  546  includes one or more channels extending along the second side of the frame  506  and at least partially circumscribing the insulated glass unit  502 . The sill  530 , the header  532 , and the jambs  534  each include a portion of the key  544 . In this embodiment, the key  544  is spaced from the ends of the face  540  to allow the face  540  and the frame  506  to be positioned relative to each other. In other embodiments, the key  544  and the keyway  546  extend along any portions of the frame  506  that enable the window  500  to operate as described. 
     The key  544  is shaped to engage the keyway  546  when the key  544  is positioned in the keyway  546 . The key  544  and the keyway  546  are sized and shaped to allow the cladding  536  to move relative to the frame  506  when the cladding is coupled to the frame  506  and the key  544  is positioned in the keyway  546 . In particular, the keyway  546  is slightly oversized in comparison to the key  544 . Accordingly, the key  544  and the keyway  546  allow expansion and contraction of the cladding  536  relative to the sill  530 , the header  532  and the jambs  534 . As a result, the frame  506  and the cladding  536  allow the window  500  to be constructed of different materials and increase the expected service life of the window. In other embodiments, the cladding  536  may be connected to the frame  506  in any manner that enables the frame  506  to function as described. 
     In addition, in this embodiment, the external frame  506  and the interior cladding  536  are designed to prevent the cladding  536  from coming into contact with moisture that could infiltrate the window  500  from the exterior. For example, the window  500  may include a cavity  547  extending from the first side  520  to the second side  522  and structurally separating the external frame  506  and the interior cladding  536 . Openings  549  may be defined in the sill  530  and/or the jambs  534  and allow moisture to exit the cavity  547 . The openings  549  are positioned to inhibit moisture moving to the second side  522  from the first side  520 . Specifically, the opening  549  on the first side  520  is positioned on a lower portion of the cavity  547 . The opening  549  on the second side  522  is positioned on an upper side of the cavity  547 . Accordingly, the frame  506  is configured to prevent damage to the cladding  536  from moisture intruding through the window  500 . In other embodiments, the window  500  may include any cavity that enables the window to function as described. 
     In addition, one or more weather seals  548  are positioned along the cavity  547 . The moisture seals  548  extend along the openings  149 . In some embodiments, the seals  548  may include a primary seal and a secondary seal. The secondary seal  548  and/or portions of the frame  506  adjacent the seals  548  may be notched or partially opened to allow any moisture to weep out through weep holes  543 . 
     In addition, the frame  506  may include one or more thermal seals  551 . For example, the thermal seals  551  may be connected to the frame  506  and the sash frame  524 . The thermal seals  551  extend through the cavity  547  and inhibit heat transfer through the cavity. In other embodiments, the frame  506  may include any seals that enable the frame  506  to function as described. 
     The frame  506  may include any suitable materials. For example, in this embodiment, the jambs  534  include a first material such as aluminum. The cladding  536  includes a second material such as wood. Accordingly, the frame  506  includes at least two different materials. In other embodiments, the frame  506  may include any material such as, for example and without limitation, metal, wood, vinyl, and fiberglass. 
     Also, in this embodiment, the sash includes sash cladding  556  including a sash cladding face  558  and a sash cladding cap  560 . The sash cladding  556  includes the second material and is connected to the sash frame  524  by a key  562  and a keyway  564 . In other embodiments, the window  500  includes any cladding that enables the window to function as described. 
     In the illustrated embodiment, the first material is visible on a first side  520  of the window  500  ( FIG. 18 ) and the second material is visible on a second side  522  of the window ( FIG. 19 ). The different materials provide different characteristics for the window  500 . For example, the first material may increase the strength of the window  500  and the second material may provide a desired appearance for the window. In this embodiment, the window  500  is positioned on a structure such that the second side  522  is on the interior and the first side  520  is on the exterior of the structure. Accordingly, the first material is visible on the exterior and the second material is visible on the interior of the structure. In this embodiment, the window  500  includes a fin  523  to receive fasteners such as nails and screws for mounting the window on the structure. In other embodiments, the window  500  may be mounted in any manner that enables the window to function as described. For example, in some embodiments, the fin  523  is omitted. 
     In reference to  FIG. 20 , the frame  506  further defines a thermal cavity  128  intermediate the first side  520  and the second side  522 . The thermal cavity  528  has a width in a range of about 1 inch (in.) to about 2 in. The thermal cavity  528  is aligned with the pocket  512  such that the central plane  514  extends through the thermal cavity  528 . For example, in some embodiments, a distance between a central plane of the thermal cavity  528  and the central plane  514  of the pocket  512  is in a range up to about 0.5 in. In this embodiment, the thermal cavity  528  and the pocket  512  have a common central plane  514 . Accordingly, the thermal cavity  528  and the pocket  512  provide a substantially continuous thermal break extending through the window  500  to reduce the transfer of heat through the window. In other embodiments, the window  500  may have any thermal cavity  528  that enables the window to operate as described. 
     In addition, the sash frame  524  defines a sash thermal cavity  550  intermediate the first side  520  and the second side  522 . The sash thermal cavity  550  is aligned with the pocket  512  such that the central plane  514  extends through the sash thermal cavity when the sash is in a closed position. For example, in some embodiments, a distance between a central plane  533  of the thermal cavity  550  and the central plane  514  of the pocket  512  is in a range up to about 0.5 in. In other embodiments, the window  500  may include any thermal cavity that enables the window to function as described. For example, in some embodiments, the sash frame  524  does not necessarily include a thermal cavity  550 . In further embodiments, the window  500  includes three or more thermal cavities. 
     An insulating material  552  having a thermal conductance less than the first material and/or the second material is positioned within the thermal cavity  528  and the sash thermal cavity  550 . For example, the insulating material  552  may have a thermal conductance in a range of about 0.21 British thermal units per hour square feet degrees Fahrenheit (Btu/(hr·ft 2 ·° F.)) to about 0.840 Btu/(hr·ft 2 ·° F.). The insulating material  552  substantially fills the thermal cavity  528  and extends between portions of the frame  506  including the first material and/or the second material to reduce heat transfer through the window. In other embodiments, the window  500  may include any insulating material  552  that enables the window to operate as described. 
     In reference to  FIGS. 20 and 21 -D, a method  600  of assembling the window  500  includes aligning  626  the thermal cavity  528  and the pocket  512  such that the central plane  514  of the thermal cavity extends through the pocket. Accordingly, the thermal cavity  528  and the pocket  512  provide a continuous thermal break throughout the window  500  to inhibit heat transfer through the window. In some embodiments, extrusions for the frame  506  are designed to provide alignment of the thermal cavity  528  and the pocket  512 . In other embodiments, the thermal cavity  528  and the pocket  512  may be aligned in any manner that enables the window  500  to operate as described. 
     Also, the method includes positioning  601  insulating material  552  in the thermal cavity  528  defined by the frame  506  intermediate the first side  520  and the second side  522 . In addition, the method includes fabricating  602  components for the frame  506 , the face  540 , and the cap  542 . For example, the sill  530 , the header  532 , and the jambs  534  may be cut for the frame  506  from a material such as aluminum. In addition, the sill  530 , the header  532 , and/or the jambs  534  may be cut for the face  540  and the cap  542  of the cladding  536  from a material such as wood. In other embodiments, the frame  506  may be fabricated in any manner that enables the frame to function as described. In some embodiments, components such as the cap  542  may be omitted. 
     The frame  506  may be assembled by positioning  604  each corner key  538  into the opening  545  in one of the header  532  and the sill  530  and into the opening  545  in one of the jambs  534  to form corners of the frame. The cladding face  540  may be positioned  606  on the sill  530 , the header  532 , and the jambs  534 . With the corner keys  538  maintaining the frame  506  in position, the sill  530 , the header  532 , and the jambs  534  may be conveyed  607  into a station and connected  608  at the corners. For example, the corners of the frame  506  may be crimped to secure the sill  530 , the header  532 , and the jambs  534  together. In addition, the method  600  includes connecting  610  the cladding face  540  to the frame  506 . In some embodiments, the cladding face  540  may be secured to the sill  530 , the header  532 , and the jambs  534  at the same time that the sill  530 , the header  532 , and the jambs  534  are secured together. The cladding face  540  may be secured using nails. The corners of the frame  506  may be sealed  612  by at least partially filling the openings  545  with sealant. In addition, after the corners are sealed  212 , the frame  506  may be removed  613  from the crimping station and conveyed  614  to the next station. The cap  542  may be connected  615  to the face  540  after the face is connected to the frame  506 . For example, the frame  506  may be conveyed into a nailer station and the cap  542  nailed to the face. In other embodiments, the frame  506  may be assembled in any suitable manner using, for example and without limitation, adhesives, fasteners, and/or any other suitable attachment means. After, connecting  615  the face, the frame  506  is conveyed  611  out and prepared for glazing and/or hardware attachment. 
     In some embodiments, the frame  506  is mounted in a wall of a structure such that first side  520  is positioned on the exterior of the structure and the second side  522  is positioned on the interior of the structure. Accordingly, the cladding  536  may be connected to the second side  522  of the window such that the cladding  536  is visible on the interior of the structure. In other embodiments, the cladding  536  may be connected to the sill  530 , the header  532 , and/or the jambs  534  in any manner that enables the window  500  to operate as described. 
     To assemble windows  500  that include fixed insulated glass units  502 , the method  600  includes fabricating  616  and positioning  617  a fixed filler on the frame  506 . In addition, setting block chairs are positioned  619  on the frame  506 . The window  500  is conveyed  621  into a glazing station. In the glazing station, the window  500  is glazed. For example, the method includes connecting  618  the first glass pane  508  to the second glass pane  510  to form an insulated glass unit  502 . The insulated glass unit  502  is connected  625  to the frame  506 . The insulated glass unit  502  may be connected to the frame  506  by positioning seals or applying sealant on the frame  506  and positioning the insulating glass unit  502  on the sealant. After glazing, the window  500  is conveyed  627  out of the glazing station. Glazing stops  507  are fabricated  631  and positioned on the frame  506 . 
     To assemble windows  500  that are operable (i.e., positionable between opened and closed positions), the insulated glass unit  502  may be included in the sash  526  positioned in the frame  506 . For example, hardware and seals are attached  628  to the frame  506 . The sash frame  524  is positioned  629  in the frame  506 . The sash frame  524  may be positioned such that it is movable, e.g., pivotable and/or slidable, relative to the frame  506 . The window  500  is conveyed  630  into a glazing station and the insulated glass unit  502  is positioned  632  in the sash frame  524 . For example, in some embodiments, setting block chairs may be positioned on the sash frame  524  and used to support the insulated glass unit  502  in the sash frame  524 . The window  500  is conveyed  234  out of the glazing station and glazing stops are fabricated  636  and positioned  638  on the window  500 . 
       FIG. 22  is a sectional view showing temperature zones of the window  500 . For example, the window  500  may be positioned in the wall of a structure such that the first side  520  is on an exterior of the structure and the second side  522  is on an interior of the structure. In the illustrated embodiment, the first side  520  has a first temperature and the second side  522  has a second temperature. In this embodiment, the second temperature is greater than the first temperature because the interior of the structure is warmer than the exterior. Accordingly, heat has a tendency to flow from the interior of the structure towards the exterior. In other embodiments, the exterior may be warmer than the interior. 
     As shown in  FIG. 22 , the thermal cavity  528  and the pocket  512  define a substantially continuous thermal break  554  extending throughout the window  500 . The thermal break  154  interrupts the transfer of heat from the first side  520  to the second side  522 . Accordingly, the second side  522  is able to have a temperature that is significantly less than the temperature of the first side  520 . As a result, the window  500  reduces the transfer of heat between the exterior and the interior of structure. 
       FIG. 23  is an elevation view of a window  700  including sashes. In reference to  FIG. 22 , the window  700  includes a first insulated glass unit  702 , a second insulated glass unit  704 , and a frame  706 . The first insulated glass unit  702  includes a first glass pane  708  and a second glass pane  710 . The second glass pane  710  is spaced from the first glass pane  708  such that the first glass pane and the second glass pane define a pocket  712  therebetween. A central plane  714  extends through the pocket  712  and is spaced equal distances from the first glass pane  708  and the second glass pane  710 . The second insulated glass unit  704  includes a third glass pane  716  and a fourth glass pane  718 . The fourth glass pane  718  is spaced from the third glass pane  716  such that the third glass pane and the fourth glass pane define a pocket  720  therebetween. A central plane  722  extends through the pocket  720  and is spaced equal distances from the third glass pane  716  and the fourth glass pane  718 . The pockets  712 ,  720  may be filled with a gas such as argon to reduce the transfer of heat through the window  700 . In other embodiments, the window  700  may include any insulated glass unit that enables the window to function as described. 
     In addition, the window  700  includes a first sash frame  724  and a second sash frame  726 . The first sash frame  724  circumscribes the first insulated glass unit  702  and the second sash frame  726  circumscribes the second insulated glass unit  704 . In the example, the first insulated glass unit  702  and the first sash frame  724  form a first sash and the second insulated glass unit  704  and the second sash frame  726  form a second sash. In other embodiments, the window  700  may include any sashes that enable the window to function as described. 
     In this embodiment, the first sash frame  724  and the second sash frame  726  are configured to pivot relative to the frame  506 . The central plane  714  of the first insulated glass unit  702  and the central plane  722  of the second insulated glass unit  704  are aligned when the first sash and the second sash are in a first, i.e. closed, position. The central plane  714  of the first insulated glass unit  702  and the central plane  722  of the second insulated glass unit  704  may be unaligned and extend at an angle relative to each other when at least one of the sashes is in a second, i.e., opened, position. Accordingly, the window  700  is a casement window. In other embodiments, the window  700  may have any sashes that enable the window  700  to function as described. For example, in some embodiments, the central plane  714  of the first insulated glass unit  702  is offset from the central plane  722  of the second insulated glass unit  704  to enable at least one of the first sash and the second sash to move relative to the other. In further embodiments, the first sash frame  724  and/or the second sash frame  726  may be omitted and the first insulated glass unit  702  and/or the second insulated glass unit  704  may be fixed relative to the frame  706 . 
     The frame  706  includes at least one thermal cavity extending between first and second sides of the frame and generally circumscribing the first insulated glass unit  702  and the second insulated glass unit  704 . The first insulated glass unit  702 , the second insulated glass unit  704 , and the thermal cavities are positioned such that the central planes  714 ,  722  extend through the thermal cavity. Accordingly, the first insulated glass unit  702 , the second insulated glass unit  704 , and the thermal cavities provide a continuous thermal break extending throughout the window  700 . 
     In some embodiments, at least a portion of the frame  706  of the window  700  may form a louver (not shown). In such embodiments, the insulated glass units  702 ,  704  may be omitted from the portion of the frame  706  forming the louver. For example, the frame  706  may define an opening configured to receive vents, fans, and/or air conditioning units. In other embodiments, the frame  706  may be configured to receive any components that enable the window  700  to function as described. 
       FIG. 24  is a sectional view of a portion of an example window  800  including cladding  802 . The window  800  includes an insulated glass unit  804 , a frame  806 , and a sash frame  808 . As shown in  FIG. 24 , in this embodiment, the cladding  802  is configured to connect to the frame  806  and the sash frame  808 . For example, the frame  806  and the sash frame  808  each include clips  810  that extend into and engage cavities  812  in the cladding  802 . Accordingly, the cladding  802  is configured to snap into position on the frame  806  and the sash frame  808  without the use of tools. 
     In addition, in this embodiment, the frame  806  and the sash frame  808  each include keys  814  that allow the frame and the sash frame to connect to different cladding. For example, the keys  814  may engage the keyways  546  (shown in  FIG. 20  in the cladding  536 ). In other embodiments, the cladding  802  may be connected to the frame  806  and the sash frame  808  in any manner that enables the window  800  to function as described. For example, in some embodiments, the cladding  802  may include clips  810  and the frame  806  and the sash frame  808  may include cavities  812 . 
     In this embodiment, the cladding  802  includes a metal such as aluminum. In other embodiments, the cladding  802  may include any materials that enable the cladding to function as described. For example, in some embodiments, the cladding  802  may include, without limitation, metal, wood, vinyl, and/or fiberglass. 
     Compared to conventional doors and windows, the doors and windows of embodiments of the present disclosure have several advantages. For example, embodiments of the doors and windows include different materials that provide increased strength, a desired aesthetic appeal, and/or increased thermal characteristics in comparison to conventional doors. In addition, the doors and windows include a thermal break aligned with a glass pocket to provide a substantially continuous thermal break extending through the doors. Accordingly, the doors and windows reduce heat transfer through the doors and windows. Also, embodiments of the doors and windows include a cavity between the external frame and interior cladding material designed to prevent the interior cladding material from coming into contact with moisture that could infiltrate the door and window from the exterior. Moreover, embodiments of the door and window cost less to assemble than other types of doors and windows. 
     As used herein, the terms “about,” “substantially,” “essentially” and “approximately” when used in conjunction with ranges of dimensions, concentrations, temperatures or other physical or chemical properties or characteristics is meant to cover variations that may exist in the upper and/or lower limits of the ranges of the properties or characteristics, including, for example, variations resulting from rounding, measurement methodology or other statistical variation. 
     When introducing elements of the present disclosure or the embodiment(s) thereof, the articles “a”, “an”, “the” and “said” are intended to mean that there are one or more of the elements. The terms “comprising,” “including,” “containing” and “having” are intended to be inclusive and mean that there may be additional elements other than the listed elements. The use of terms indicating a particular orientation (e.g., “top”, “bottom”, “side”, etc.) is for convenience of description and does not require any particular orientation of the item described. 
     As various changes could be made in the above constructions and methods without departing from the scope of the disclosure, it is intended that all matter contained in the above description and shown in the accompanying drawing[s] shall be interpreted as illustrative and not in a limiting sense.