# Patent

## Title
Simulated steel fenestration system

## Abstract

Example aspects of a simulated steel fenestration system, an insulated fenestration system, and a method for insulating a fenestration system are disclosed. The simulated steel fenestration system can comprise a frame, a pane assembly assembled with the frame, and a muntin bar, wherein at least one of the frame and the muntin bar comprise a non-steel material configured to resemble steel.

## Background
CROSS-REFERENCE TO RELATED APPLICATIONS
The present application claims priority to U.S. Provisional Application No. 62/802,507, filed Feb. 7, 2019, which is hereby specifically incorporated by reference herein in its entirety.


TECHNICAL FIELD
This disclosure relates to fenestration. More specifically, this disclosure relates to a fenestration system comprising simulated steel elements.
BACKGROUND
Fenestration comprises doors and windows. A fenestration system often comprises a frame and a glass pane assembly. The glass pane assembly can comprise one or more glass panes. Some glass panes can comprise multiple lites, which can be supported by muntin bars. Other fenestration systems can comprise muntin bars that are decorative only and can give the appearance of multiple lites (known as simulated divided lites, or SDLs) to a continuous glass pane.
It can be desirable to form various elements of the fenestration system, such as the frame and the muntin bars, out of steel for visual effect. However, steel can be expensive, can require a lengthy manufacturing lead time, and can require field glazing, which can increase installation time and labor costs.
Furthermore, gaps between the glass pane assembly and the frame can allow for convection (i.e., heat transfer) from a first side of the fenestration system to a second side; for example, from the outside of a building to the inside of the building. Common solutions for reducing convection include filling open gaps with a silicone sealant or a foam material. These processes can be expensive, visually unappealing, and can slow the assembly process. Another common solution is to minimize tolerances between the frame and the glass pane assembly. However, this can increase the likelihood of breaking the glass pane(s) during assembly.
SUMMARY
It is to be understood that this summary is not an extensive overview of the disclosure. This summary is exemplary and not restrictive, and it is intended neither to identify key or critical elements of the disclosure nor delineate the scope thereof. The sole purpose of this summary is to explain and exemplify certain concepts off the disclosure as an introduction to the following complete and extensive detailed description.
Disclosed is simulated steel fenestration system comprising a frame; a pane assembly assembled with the frame; and a muntin bar, wherein at least one of the frame and the muntin bar comprise a non-steel material configured to resemble steel.
Also disclosed is an insulated fenestration system comprising a frame comprising a first bracket, the first bracket defining a sealing slot; a pane assembly assembled with the frame, the pane assembly comprising a first pane; a bracket gap defined between the first bracket and the first pane; and a first seal engaging the sealing slot, the first seal extending across the bracket gap and abutting the first pane.
A method for insulating a fenestration system is also disclosed, the method comprising providing a frame, the frame comprising a first bracket, the first bracket defining a sealing slot; engaging a connector portion of a seal with the sealing slot; assembling a pane assembly with the frame, the pane assembly comprising a first pane, wherein a bracket gap is defined between the first bracket and the first pane; and extending an extension portion of the seal across the bracket gap to abut an outer pane surface of the first pane.
Various implementations described in the present disclosure may include additional systems, methods, features, and advantages, which may not necessarily be expressly disclosed herein but will be apparent to one of ordinary skill in the art upon examination of the following detailed description and accompanying drawings. It is intended that all such systems, methods, features, and advantages be included within the present disclosure and protected by the accompanying claims.



BRIEF DESCRIPTION OF THE DRAWINGS
The features and components of the following figures are illustrated to emphasize the general principles of the present disclosure. Corresponding features and components throughout the figures may be designated by matching reference characters for the sake of consistency and clarity.
FIG. 1 is a front view of a fenestration system comprising a frame and an insulating glass unit, in accordance with one aspect of the present disclosure.
FIG. 2 is a top perspective cutaway view of a bottom left section of the fenestration system of FIG. 1.
FIG. 3 is a top view of Section A of FIG. 2.
FIG. 4 is a detail top view of a seal of the fenestration system of FIG. 1 in an uncompressed configuration.
FIG. 5 is a detail top view of the seal of FIG. 4 in a compressed configuration.
FIG. 6 is a perspective view of various aspects of the fenestration system installed in a building.
FIG. 7 is a perspective view of various aspects of the fenestration system installed in a building.
FIG. 8 is a front view of various aspects of the fenestration system installed in a building.
FIG. 9 is a perspective view of various aspects of the fenestration system installed in a building.



DETAILED DESCRIPTION
The present disclosure can be understood more readily by reference to the following detailed description, examples, drawings, and claims, and the previous and following description. However, before the present devices, systems, and/or methods are disclosed and described, it is to be understood that this disclosure is not limited to the specific devices, systems, and/or methods disclosed unless otherwise specified, and, as such, can, of course, vary. It is also to be understood that the terminology used herein is for the purpose of describing particular aspects only and is not intended to be limiting.
The following description is provided as an enabling teaching of the present devices, systems, and/or methods in its best, currently known aspect. To this end, those skilled in the relevant art will recognize and appreciate that many changes can be made to the various aspects of the present devices, systems, and/or methods described herein, while still obtaining the beneficial results of the present disclosure. It will also be apparent that some of the desired benefits of the present disclosure can be obtained by selecting some of the features of the present disclosure without utilizing other features. Accordingly, those who work in the art will recognize that many modifications and adaptations to the present disclosure are possible and can even be desirable in certain circumstances and are a part of the present disclosure. Thus, the following description is provided as illustrative of the principles of the present disclosure and not in limitation thereof.
As used throughout, the singular forms “a,” “an” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “an element” can include two or more such elements unless the context indicates otherwise.
Ranges can be expressed herein as from “about” one particular value, and/or to “about” another particular value. When such a range is expressed, another aspect includes from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, by use of the antecedent “about,” it will be understood that the particular value forms another aspect. It will be further understood that the endpoints of each of the ranges are significant both in relation to the other endpoint, and independently of the other endpoint.
For purposes of the current disclosure, a material property or dimension measuring about X or substantially X on a particular measurement scale measures within a range between X plus an industry-standard upper tolerance for the specified measurement and X minus an industry-standard lower tolerance for the specified measurement. Because tolerances can vary between different materials, processes and between different models, the tolerance for a particular measurement of a particular component can fall within a range of tolerances.
As used herein, the terms “optional” or “optionally” mean that the subsequently described event or circumstance can or cannot occur, and that the description includes instances where said event or circumstance occurs and instances where it does not.
The word “or” as used herein means any one member of a particular list and also includes any combination of members of that list. Further, one should note that conditional language, such as, among others, “can,” “could,” “might,” or “may,” unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain aspects include, while other aspects do not include, certain features, elements and/or steps. Thus, such conditional language is not generally intended to imply that features, elements and/or steps are in any way required for one or more particular aspects or that one or more particular aspects necessarily include logic for deciding, with or without user input or prompting, whether these features, elements and/or steps are included or are to be performed in any particular aspect.
Disclosed are components that can be used to perform the disclosed methods and systems. These and other components are disclosed herein, and it is understood that when combinations, subsets, interactions, groups, etc. of these components are disclosed that while specific reference of each various individual and collective combinations and permutation of these may not be explicitly disclosed, each is specifically contemplated and described herein, for all methods and systems. This applies to all aspects of this application including, but not limited to, steps in disclosed methods. Thus, if there are a variety of additional steps that can be performed it is understood that each of these additional steps can be performed with any specific aspect or combination of aspects of the disclosed methods.
Disclosed in the present application is a fenestration system and associated methods, systems, devices, and various apparatus. Example aspects of the fenestration system can comprise a frame and a pane assembly. Some aspects can further comprise least one muntin bar. Portions of the frame and/or muntin bar can comprise a non-steel material configured to resemble steel. It would be understood by one of skill in the art that the disclosed fenestration system is described in but a few exemplary aspects among many. No particular terminology or description should be considered limiting on the disclosure or the scope of any claims issuing therefrom.
FIG. 1 illustrates a first aspect of a fenestration system 100 according to the present disclosure. As shown, the fenestration system 100 can comprise a frame 110, a pane assembly 150, and a plurality of outer muntin bars 170 and inner muntin bars 280 (shown in FIG. 2). Example aspects of the pane assembly 150 can comprise multiple panes, such as a first pane and a second pane, which can be rectangular in shape in some aspects. For example, the pane assembly 150 can be a glass pane assembly comprising multiple glass panes. For example, in the present aspect, the glass pane assembly can be an insulating glass unit 160 (IGU) comprising an outer pane, such as an outer glass pane 162, and an inner pane, such as an inner glass pane 263 (shown in FIG. 2). The frame 110 can define a first frame side such as a left frame side 112, an opposite second frame side such as a right frame side 114, a first frame end such as top frame end 116, and an opposite second frame end such as a bottom frame end 118.
In the present aspect, the outer muntin bars 170 can comprise a pair of horizontal outer muntin bars 172 extending generally horizontally, relative to the orientation shown, between the left frame side 112 and the right frame side 114, and a pair of vertical outer muntin bars 174 extending generally vertically, relative to the orientation shown, between the top frame end 116 and the bottom frame end 118. The inner muntin bars 280 can similarly comprise a pair of horizontal inner muntin bars 282 (shown in FIG. 2) and a pair of vertical inner muntin bars 284 (shown in FIG. 2). Other aspects can comprise more or fewer outer and/or inner muntin bars 170,280. Further, in other aspects, the outer and inner muntin bars 170,280 can be arranged in any other suitable orientation. In still other aspects, the fenestration device can comprise outer muntin bars 170 only or inner muntin bars 280 only. Moreover, in some aspects, some or all of the outer muntin bars 170 and/or inner muntin bars 280 can be segmented into a plurality of muntin bar segments, as described in further detail below with respect to FIG. 2.
According to example aspects, each of the outer glass pane 162 and inner glass pane 263 can comprise a singular pane of glass, and the outer and inner muntin bars 170,280, respectively, can be attached thereto for decorative purposes and to give the appearance of multiple lites (i.e. to define simulated divided lites 166, or SDLs). In other aspects, one or both of the outer glass pane 162 and inner glass pane 263 can comprise multiple lites and the muntin bars can be configured to support the lites.
Various elements of the fenestration system 100 can comprise a non-steel material configured to simulate a steel material. For example, various elements can comprise an aluminum extrusion, which can be treated to resemble steel. In the present aspect, the outer and inner muntin bars 170,280 and the frame 110, or portions thereof, can each be shaped to resemble the form of steel glazing. A benefit of forming various elements from non-steel materials configured to simulate steel, such as aluminum, can be lower material and manufacturing costs when compared to steel itself. Additional benefits can be reduced manufacturing and assembly times and reduced labor costs.
FIG. 2 illustrates a cutaway view of a bottom left section 200 of the fenestration system 100. As shown, the outer glass pane 162 and inner glass pane 263 be spaced apart by a spacer 266 and can define a space 268 therebetween sealed with glazing, which can aid in reducing convection (i.e. heat transfer) across the fenestration system 100. Example aspects of the insulating glass unit 160 can define a first side edge such as a left side edge 262, an opposite second side edge such a right side edge (not shown), a first end edge such as top end edge (not shown), and a second end edge such as a bottom end edge 264. Each of the left side edge 262, right side edge, top end edge, and bottom end edge 264 of the insulating glass unit 160 can be substantially similar. In the present FIG. 2, the bottom left section 200 of the fenestration system 100 is illustrated, such that portions of the left frame side 112 and bottom frame end 118 of the frame 110 are visible and portions of the left side edge 262 and bottom end edge 264 of the insulating glass unit 160 are visible.
According to the present aspect, each of the left frame side 112, right frame side 114 (shown in FIG. 1), top frame end 116 (shown in FIG. 1), and bottom frame end 118 of the frame 110 can be substantially similar. Referring to the left frame side 112, the left frame side 112 can comprise a left frame body 210, a first bracket (e.g., an outer bracket 212), and a second bracket (e.g., an inner bracket 214). In the present aspect, the outer bracket 212 can be a glazing bead attached to the left frame body 210 by an engagement mechanism 314 (shown in FIG. 3), and the inner bracket 214 can be monolithically formed with the left frame body 210. In other aspects, either or both of the first and second brackets 126,128 can be monolithically formed with the main frame body 120 or can be separately formed from the main frame body 120 and attached thereto. The outer and inner bracket 212,214 can extend substantially along a length of the left frame body 210. According to example aspects, the left side edge 262 of the insulating glass unit 160 can be clamped between the outer bracket 212 and the inner bracket 214. For example, the outer bracket 212 can engage the outer glass pane 162 proximate the left side edge 262 and the inner bracket 214 can engage the inner glass pane 263 proximate the left side edge 262. Each of the right frame side 114 (shown in FIG. 1), top frame end 116 (shown in FIG. 1), and bottom frame end 118 can comprise similar outer and inner brackets 212,214 configured to engage the corresponding right side edge (not shown), top end edge (not shown), and bottom end edge 264 of the insulating glass unit 160, respectively. For example, in the present FIG. 2, a bottom frame body 220 and the outer and inner brackets 212,214 of the bottom frame end 118 are also visible. The left frame body 210 and bottom frame body 220, together with a right frame body (not shown) of the right side frame 114 and a top frame body (not shown) of the top end frame 116, can define a main body 230 surrounding the insulating glass unit 160.
The left frame body 210 of the left frame side 112 can further comprise an outer border portion 216 adjacent the outer bracket 212 and an inner border portion 218 adjacent the inner bracket 214. The right frame side 114, top frame end 116, and bottom frame end 118 can each define substantially similar outer border and inner border portions 216,218 to provide the appearance of a continuous outer border and a continuous inner border surrounding a periphery of the insulating glass unit 160.
The outer muntin bars 170 can be attached to the outer glass pane 162, and the inner muntin bars 280 can be attached to the inner glass pane 263, as shown. In example aspects, the outer and inner muntin bars 170,280 can be attached to the insulating glass unit 160 by a fastener (not shown), such as, for example, an adhesive, such as double-sided tape. In other aspects, the outer and inner muntin bars 170,280 can be attached to the insulating glass unit 160 by any other suitable fastener, including, for example, glue, screws, welding, or the like. As illustrated, each of the outer muntin bars 170 can define a substantially triangular cross-section, and each of the inner muntin bars 280 can define a substantially rectangular cross-section. In the present aspect, the rectangular cross section of the inner muntin bars 280 can be relatively narrow. In other aspects, however, the outer and/or inner muntin bars 170,280 can define any other suitable cross-sectional shape and can be any suitable size.
Referring to the outer muntin bars 170, in the present aspect, each of the vertical outer muntin bars 174 can extend continuously from the top frame end 116 (shown in FIG. 1) to the bottom frame end 118. Each of the horizontal outer muntin bars 172 can comprise multiple muntin bar segments 274, such that each of the horizontal outer muntin bars 172 can define a break at each intersection with a vertical outer muntin bar 174. In some aspects, as shown, the muntin bar segments 274 can be formed and arranged to provide the appearance of continuous horizontal outer muntin bars 172. In other aspects, the horizontal outer muntin bars 172 can be continuous, and the vertical outer muntin bars 174 can be segmented. According to example aspects, the inner muntin bars 280 can be configured in the substantially the same manner.
Each of the muntin bar segments 274 of the horizontal outer muntin bars 172 can define a first end 276 and a second end 278. Referring specifically to a first muntin bar segment 274a, the first muntin bar segment 274a can extend between the outer bracket 212 of the left frame side 112 and a first vertical outer muntin bar 174a. The first end 276 can be orientated at the outer bracket 212, and the second end 278 can be oriented at the first vertical outer muntin bar 174a. In some aspects, the first and/or second ends 276,278 can be coupled to the outer bracket 212 and/or the first vertical outer muntin bar 174a, respectively. Furthermore, one or both of the first end 276 and second end 278 can be contoured to substantially match the profile of the outer bracket 212 and the first vertical outer muntin bar 174a, respectively.
The first and second ends 276,278 of the other muntin bar segments 274 can also be contoured to match the profile of adjacent elements. For example, as shown in FIG. 2, the first end 276 of a second muntin bar segment 274b is also contoured to match the profile of the first vertical outer muntin bar 174a. As such, each of the horizontal outer muntin bars 172 can appear unbroken where the muntin bar segments 274 meet the corresponding vertical outer muntin bars 174. The horizontal outer muntin bars 172 can also cohesively join with the corresponding outer brackets 212 due to the matching contour, which can provide an attractive visual appearance. Again, the inner muntin bars 280 can be configured in the substantially the same manner.
FIG. 3 illustrates a top view of Section A of FIG. 2, wherein the insulating glass unit 160 is engaged by the outer and inner brackets 212,214. As shown, in the present aspect, an outer bracket gap 320 can be present between the outer glass pane 162 and an interior wall 316 of the outer bracket 212. The outer bracket gap 320 can extend substantially along a length of the interior wall 316. The outer bracket 212 can define a sealing slot 330 formed in an outer surface 318 of the interior wall 316, and the sealing slot 330 can extend substantially along a length of the interior wall 316. In the present aspect, the sealing slot 330 can define a T-shaped cross-section. However, in other aspects the sealing slot 330 can define any other suitable cross-sectional shape.
According to example aspects, a portion of a first seal 340 can be received in the sealing slot 330. The first seal 340 can be a bulb seal 342, as shown, a fin seal, a wedge seal, or any other suitable type of seal or weather stripping known in the art. In the present aspect, the first seal 340 can be formed from ethylene propylene diene monomer rubber (EPDM). In other aspects, the first seal 340 can be formed from another rubber, vinyl, a thermoplastic elastomer (TPE/TPS), polyvinyl chloride (PVC), foam, felt, or any other suitable material or combination of materials known in the art. Each of the right frame side 114 (shown in FIG. 1), top frame end 116 (shown in FIG. 1), and bottom frame end 118 (shown in FIG. 1) can be substantially similar to the left frame side 112, and can define a similar sealing slot 330 and first seal 340 engaged therewith.
Example aspects of the first seal 340 can define a connector portion 344 received in the sealing slot 330 and an extension portion extending outwards from the connector portion 344 towards the outer glass pane 162 of the insulating glass unit 160. According to example aspects of the bulb seal 342, the extension portion can be a bulb portion 346. In example aspects, as shown, the bulb portion 346 of the bulb seal 342 can extend fully across the outer bracket gap 320 between the interior wall 316 and the insulating glass unit 160 and can touch or abut an outer pane surface 362 of the outer glass pane 162. In some aspects, the first seal 340 can be compressed between the outer bracket 212 and the insulating glass unit 160, such that the first seal 340 can exert a force on the outer bracket 212 and the outer glass pane 162. As such, in some aspects, the first seal 340 can comprise a compressible material. The first seal 340 can also extend substantially along the length of the sealing slot 330, which in some cases can be substantially along the length of the interior wall 316. In other aspects, the first seal 340 may not extend fully across the outer bracket gap 320 and/or fully along the length of the left frame body 210.
According to example aspects, the first seal 340 can extend fully across the bracket gap 320 to divide the outer bracket gap 320 into a first gap portion 322 and a second gap portion 324. Air received in the first gap portion 322 can be prevented from entering the second gap portion 324 by the first seal 340, and vice versa. This can provide the benefit of preventing the transfer of hot and/or cold air across the first seal 340, thus insulating the fenestration system 100 at the outer bracket 212. The force exerted by the compressed first seal 340 on the outer glass unit can be great enough to prohibit the transfer of air in between the first seal 340 and the outer glass pane 162, but minor enough to create minimal stress on the outer glass pane 162. The seals 340 of the right frame side 114, top frame end 116, and bottom frame end 118 can similarly prevent the transfer of hot and/or cold air between the corresponding first and second gap portions 322,324. As such, a substantially air-proof seal can be created fully around a perimeter of the insulating glass unit 160 for reducing convection across the fenestration system 100. Example aspects of the frame 110 can further comprise insulating bars 350, as shown, for further thermally insulating the fenestration system 100.
Example aspects of the inner bracket 214 can define a sealing channel 370 formed in an interior wall 372 thereof. The sealing channel 370 can extend substantially along a length of the interior wall 372. In the present aspect, the sealing channel 370 can define a substantially circular cross sectional shape. However, in other aspects the sealing channel 370 can define any other suitable cross-sectional shape. According to example aspects, a second seal 380 can be received in the sealing channel 370. The second seal 380 can be a glazing seal, as shown. In a particular aspect, the glazing seal can be chord stock. In other aspects, the second seal 380 can be a gasket, bulb seal, a fin seal, wiper seal, a wedge seal, or any other suitable type of seal or weather stripping known in the art. Example aspects of the second seal 380 can be formed from ethylene propylene diene monomer rubber (EPDM) another rubber, vinyl, a thermoplastic elastomer (TPE/TPS), polyvinyl chloride (PVC), foam, felt, or any other suitable material or combination of materials known in the art. Each of the right frame side 114 (shown in FIG. 1), top frame end 116 (shown in FIG. 1), and bottom frame end 118 (shown in FIG. 1) can be similarly define a sealing channel 370 formed in the inner bracket 214 thereof, and a second seal 380 received therein.
According to example aspects, a portion of the second seal 380 can be received in the sealing channel 370 and another portion of the second seal 380 can extend outwards from the sealing channel 370 towards the inner glass pane 263 of the insulating glass unit 160. In example aspects, as shown, the second seal 380 can touch or abut an outer pane surface 363 of the inner glass pane 263. Furthermore, in some aspects, the second seal 380 can be compressed between the inner bracket 214 and the insulating glass unit 160, such that the second seal 380 can exert a force on the inner bracket 214 and the inner glass pane 263. As such, each of the first seal 340 and second seal 380 can apply a force to the outer glass pane 162 and inner glass pane 263, respectively, to sandwich the insulating glass unit 160 between the first and second seals 340,380. Similar to the first seal 340, the second seal 380 can also provide the benefit of preventing the transfer of hot and/or cold air across the second seal 380. Some aspects of the fenestration system can further comprise a third seal 382 compressed between the interior wall 372 of the inner bracket 214 configured to further reduce convection.
Example aspects of the engagement mechanism 314 of the outer bracket 212 can be configured to engage a mating engagement mechanism 350 of the left frame body 210, as shown. In the present aspect, the engagement mechanism 314 can define a first prong 326 and a second prong 328. The first prong 326 can be configured to engage a ramped engagement surface 352 of the mating engagement mechanism 350. The second prong 328 can define a tab 329 configured to engage a tab recess 354 of the mating engagement mechanism 350. In some aspects, the outer bracket 212, or portions thereof, can be formed from a resilient material. For example, in a particular aspect, the second prong 328 can be formed from a resilient material, which can allow the second prong 328 to flex.
In one aspect, to attach to the outer bracket 212 to the left frame body 210, the first prong 326 of the engagement mechanism 314 can be inserted into the mating engagement mechanism 350 and can engage the ramped engagement surface 352. The outer bracket 212 can be rotated towards the insulating glass unit 160 until the second prong 328 is adjacent to a projection 356 of the left frame body 210. A force can be applied to the outer bracket 212 to press the second prong 328 against the projection 356. The second prong 328 can flex to allow the second prong 328 to slide past the projection 356 and into the mating engagement mechanism 350. An angled surface 429 (shown in FIG. 4) of the tab 329 can facilitate sliding the second prong 328 past the projection 356. Once received within the mating engagement mechanism 350, the tab 329 can be aligned with the tab recess 354, and the resiliency of the second prong 328 can bias the tab 329 into the tab recess 354 to secure the outer bracket 212 to the left frame body 210. Furthermore, as shown, the first seal 340 can be compressed between the outer bracket 212 and the insulating glass unit 160 when the outer bracket 212 is secured to the left frame body 210.
FIGS. 4 and 5 illustrate the first seal 340 before and after, respectively, compression between the outer bracket 212 and the outer glass pane 162. As shown in FIG. 5, in some aspects, the interior wall 316 of the outer bracket 212 can deform under the force exerted by the first seal 340 when the fenestration system 100 is assembled. FIGS. 6-9 illustrate various other aspects of the fenestration system 100 installed in buildings 600,700,800,900, respectively. As shown, the size of the fenestration system 100 can vary. Furthermore, the size of the simulated divided lites 166 (or actual lites, in some instances) can vary. The ratio of the size of the simulated divided lites 166 to the size of the fenestration system 100 can vary, as well. For example, a 20′′×12′′ fenestration system 100 can comprise twenty 4′′×3′′ simulated divided lites 166 in one aspect. In another aspect, the 20′′×12′′ fenestration system 100 can comprise twelve 5′′×4′′ simulated divided lites 166.
One should note that conditional language, such as, among others, “can,” “could,” “might,” or “may,” unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain embodiments include, while other embodiments do not include, certain features, elements and/or steps. Thus, such conditional language is not generally intended to imply that features, elements and/or steps are in any way required for one or more particular embodiments or that one or more particular embodiments necessarily include logic for deciding, with or without user input or prompting, whether these features, elements and/or steps are included or are to be performed in any particular embodiment.
It should be emphasized that the above-described embodiments are merely possible examples of implementations, merely set forth for a clear understanding of the principles of the present disclosure. Any process descriptions or blocks in flow diagrams should be understood as representing modules, segments 274, or portions of code which include one or more executable instructions for implementing specific logical functions or steps in the process, and alternate implementations are included in which functions may not be included or executed at all, may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present disclosure. Many variations and modifications may be made to the above-described embodiment(s) without departing substantially from the spirit and principles of the present disclosure. Further, the scope of the present disclosure is intended to cover any and all combinations and sub-combinations of all elements, features, and aspects discussed above. All such modifications and variations are intended to be included herein within the scope of the present disclosure, and all possible claims to individual aspects or combinations of elements or steps are intended to be supported by the present disclosure.

## Claims

1. A simulated steel fenestration system comprising:
a frame;
a pane assembly assembled with the frame, the pane assembly defining an outer pane surface and an inner pane surface;
an outer muntin bar extending in a first direction and defining a planar first outer bar surface, a planar second outer bar surface, and an inner bar surface, each of the first and second outer bar surfaces defining a distal edge, the inner bar surface extending between the distal edges of the first and second outer bar surfaces and defining a width of the outer muntin bar, the inner bar surface attached directly to the outer pane surface, the outer pane surface spanning the width of the outer muntin bar, wherein the first and second outer bar surfaces are angled towards one another at an acute angle relative to the inner bar surface, wherein the planar first outer bar surface, the planar second outer bar surface, and the inner bar surface fully surround a substantially hollow interior of the outer muntin bar;
a muntin bar segment extending in a second direction perpendicular to the first direction, the muntin bar segment defining a first outer bar surface, a second outer bar surface, and an inner bar surface, wherein each of the first outer bar surface and the second outer bar surface defines an angled end, the angled ends abutting and matching the angle of the first outer bar surface of the outer muntin bar; and
an inner muntin bar attached to the inner pane surface and laterally aligned with the outer muntin bar, the inner muntin bar formed as a thin planar panel;
wherein at least one of the frame and the outer muntin bar comprise a non-steel material configured to resemble steel; and
wherein the frame comprises a first bracket and a second bracket, the pane assembly is clamped between the first and second brackets, and the simulated steel fenestration system further comprises a first seal compressed between the first bracket and the outer pane surface.

2. The simulated steel fenestration system of claim 1, wherein the muntin bar segment is a first muntin bar segment, the fenestration system further comprising a second muntin bar segment laterally aligned with the first muntin bar segment, and wherein each of the first muntin bar segment and second muntin bar segment are attached directly to the outer pane surface.

3. The simulated steel fenestration system of claim 1, wherein:
the frame defines a first frame side, a second frame side opposite the first frame side, a first frame end, and a second frame end opposite the first frame end;
the outer pane surface extends from the first frame side to the second frame side and from the first frame end to the second frame end;
the outer muntin bar extends from the first frame side to the second frame side; and
the muntin bar segment extends from the first frame end to the outer muntin bar.

4. The simulated steel fenestration system of claim 1, wherein:
the pane assembly comprises a solid outer pane defining the outer pane surface; and
the pane assembly further comprises a solid inner pane spaced from the solid outer pane and defining the inner pane surface.

5. The simulated steel fenestration system of claim 1, wherein the non-steel material is aluminum.

6. The simulated steel fenestration system of claim 4, wherein the outer muntin bar extends to a first distance away from the outer pane surface and the inner muntin bar extends to a second distance away from the inner pane surface, the first distance greater than the second distance.

7. The simulated steel fenestration system of claim 1, wherein:
the first bracket defines a sealing slot;
the first seal is a bulb seal defining a connector portion and an extension portion;
the connector portion is received in the sealing slot; and
the extension portion extends from the connector portion to the outer pane surface.

8. The simulated steel fenestration system of claim 1, wherein each of the first and second outer bar surfaces of the muntin bar segment are substantially planar.

9. The simulated steel fenestration system of claim 1, wherein the muntin bar segment is a first muntin bar segment and the simulated steel fenestration system further comprises a second muntin bar segment, the second muntin bar segment extending in the second direction and laterally aligned with the first muntin bar segment, the second muntin bar segment defining a first outer bar surface and a second outer bar surface, each of the first outer bar surface and the second outer bar surface defining an angled end, the angled ends abutting and matching the angle of the second outer bar surface of the outer muntin bar.

10. The simulated steel fenestration system of claim 1, wherein the inner muntin bar defines a width that is about equal to or less than the width of the outer muntin bar.

11. The simulated steel fenestration system of claim 1, wherein each of the first and second outer bar surfaces of the muntin bar segment defines a distal edge, the inner bar surface of the muntin bar segment extending between the distal edges of the first and second outer bar surfaces and defining a width of the muntin bar segment, the inner bar surface attached directly to the outer pane surface, the outer pane surface spanning the width of the muntin bar segment.

12. The simulated steel fenestration system of claim 4, wherein the inner muntin bar is unattached to the outer muntin bar.

13. The simulated steel fenestration system of claim 12, wherein the inner muntin bar defines an inner bar surface attached directly to the inner pane surface, the inner pane surface spanning a width of the inner muntin bar.