Abstract: A multi-sheet glazing unit includes a closed spacer frame, the spacer frame has one side having a pair of legs joined to a base to provide the spacer frame with a U-shaped cross-section. An inner sheet has an edge mounted in an edge receiving member mounted between the legs of the U-shaped side of the spacer frame. The remaining edges of the inner sheet are within the interior of the closed spacer frame and spaced from the spacer frame. The inner sheet is held within the spacer frame by sheet retaining members mounted to the spacer frame. A sheet e.g. glass sheet is secured by a moisture-impervious adhesive to outer surface of each of the legs of the spacer frame. One type of sheet retaining members has a horizontal member and a vertical member, and a locking member. The locking member is mounted on the horizontal member spaced from the vertical member to form a groove to hold the inner sheet within the closed interior of the spacer frame.

Abstract: A panel door construction and a method of making it are disclosed, and the method relates to the provision of a generally rectangular board and cutting panel receiving openings in it. Beading strips are then secured to both faces of the board surrounding the openings, for clamping the marginal edges of a set of panels therebetween within the respective openings.

Abstract: A transparent planar storm shield has framed panels (1, 2, 12) with predetermined transparency and predetermined resistance to storm pressure and to storm-debris impact. Panels (3, 9, 10) of the framed panels are preferably shatter-proof plastic material that includes predetermined polycarbonate. Frames (4, 5, 6, 7, 13) of the framed panels have strengths in proportion to thicknesses for predetermined storm protection by predetermined areas of the storm shield. The storm shield is a cover of a predetermined portion of a building orifice which can include a door or a window. The predetermined resistance to storm pressure and to storm-debris impact of the panels is about an equivalent to a commercial grade of polycarbonate or an equivalent thereof that is twenty-five inches square with a thickness of one-eighth of an inch and being rectangular with less than twenty-five percent deviation from being square.

Abstract: A method for fabricating muntin grid pieces includes steps that attach an outer muntin grid element to an inner muntin grid element to form a two piece muntin grid piece. The outer muntin grid element surrounds at least three sides of the inner muntin grid element and may be held to the outer muntin grid element without connectors such as adhesive. The outer muntin grid element may be a slit tube that is spread open to be positioned over the inner muntin grid element.

Abstract: A window or door glazing assembly for providing structural support to the window or door frame, the assembly includes a muntin comprising a reinforcing bar fixedly secured to opposite sides of a window frame and having a pair of muntin faces removably secured to the sides of the reinforcing bar whereby the muntin face may be disassembled from the reinforcing bar to permit access to the window panes for purposes of replacement or maintenance.

Abstract: A muntin connector includes male and female connecting members each having a length, a thickness, and a width greater than the thickness. The connecting members are configured to be assembled together in a direction transverse to the length and width directions so that the connecting members cannot be disassembled by pulling apart in the length direction.

Abstract: A decorative building unit simulating a multi-pane, window or door. The decorative building unit is comprised of a glass support frame and a single glass panel having an outer surface mounted on or in the glass support frame. The glass panel has at least one simulated joint comprising at least two shallow spaced apart parallel grooves formed in the outer surface of the glass panel and a platform formed between the two spaced grooves. The size and spacing of glass support frame simulated muntins and platforms is such that, when mounted together, the simulated muntins and platforms align with each other to simulate a multi-pane beveled glass window or door.

Abstract: A one-piece window insert fastener for releasably securing a window insert to a window sash having a generally rectangular shape with a plurality of openings about its periphery, the insert having a generally rectangular-shaped frame with a single pane structure fixed therein and having a plurality of bars each having a terminal end portion and each terminal end portion having a channel therein, the fastener being elongate and having a longitudinal axis, the fastener consisting of: a head portion adapted to engage the window sash and removably insertable into one of the openings in the window sash; a tail portion adapted to fixedly engage the window insert and removably insertable into one of the channels in the window insert; and a compression portion between the head portion and tail portion, the compression portion biasing the head portion against the window sash and allowing movement of the head portion toward the tail portion when the window insert is inserted in the window sash and moving the head porti

Abstract: Compression molded pigmented door skins fabricated by compression molding a pigmented, curable, unsaturated polyester sheet molding compound containing a co-curable unsaturated monomer, a low profile additive, and a microvoid-reducing thermoplastic polymer, exhibit uniform stainability while maintaining a low linear thermal coefficient of expansion. Such door skins are suitable for preparing wood grain textured exterior insulated doors which exhibit minimal thermal deflection when exposed to interior/exterior temperature differentials, even at eight foot door heights. The doors may be stained without first applying a seal coat.

Abstract: A method of making a seal on a panel for a door or window by applying and curing a sealant on the surface of the panel is provided, preferably by screening the sealant onto the surface of the panel. The panel with the seal is mounted in a window or door frame such that the seal is disposed between the panel and the frame itself. To assemble the door or window, the panel may be inserted into “U” shaped grooves in the structural members comprising the door and the frame members assembled about the panel. The panel may have multiple layers with such seals interposed between the layers.

Abstract: A method of forming a foam-filled decorative muntin bar includes the steps of roll-forming a sheet of aluminum to form a hollow outer shell, and depositing a mixture of foaming components on the sheet of aluminum as it is being roll-formed, so the outer shell encases the mixture. The mixture is allowed to react, expand and harden to form a foamed material that substantially fills the shell. The filled shell is cut to form a segment of a foam-filmed decorative muntin bar of desired length with open ends.

Abstract: Window grill clips which can be used to removably attach window grills to windows. The window grill clip has a window frame segment and a grill segment extending from the window frame segment at an upward inclined angle. An opening is defined through the grill segment. A tang connected to the grill segment has a first leg extending away from the grill segment and a second leg extending from the first leg and back toward the opening in the grill segment. The grill segment may have a tab which extends downward from and end of the grill segment opposite an end of the grill segment connected to the window frame segment. Window frame engagement spikes may be provided on the window frame segment.

Abstract: An apparatus of a muntin bar clip to secure the position of muntin bars during and following the fabrication of multi-pane sealed glass window units. The disclosure relates to securing and positioning muntin bars at multi-pane sealed glass window unit perimeters and in joining hollow false muntin bars within such units. The invention relates particularly to muntin bar clips intended to fix the position of hollow false muntin bars at the perimeter of the window unit utilizing the sealing methods including foam strips and or butyl as the sealing medium. The disclosed invention more particularly relates to muntin bar clips for the purpose of fixing the position of hollow false muntin bars at the perimeter of the window unit where the false muntin bar is other than orthogonal in relation to the perimeter of the window.

Abstract: A decorative window assembly includes a peripheral frame, and a plurality of foam-filled decorative muntin bars interconnected in a grid which is connected to the peripheral frame. Each muntin bar includes an elongated outer shell with open ends and defining a hollow interior, and a foamed filler substantially filling the interior of the shell between the ends thereof.

Abstract: A muntin for attachment to a construction block structure is constructed of a tubular member having a top and a bottom. A channel extends along the length of the bottom. At least one prong, having a generally triangular head extends outwardly from the channel. The muntin is placed into a grout groove of the construction block structure such that the prong and head are received within the grout and the grout seeps into the channel. Once the grout dries, the muntin is securely held to the construction block structure.

Abstract: A door is provided that has a first outer skin and a second outer skin. A first and second outer skins are separated by a frame to form a hollow core between the frame and the outer skins. The outer skins have molded potions that extend into the space between the outer skins. An expandable spacer is connected to the first and second skins to hold the first and second skins a predetermined distance apart. The expandable spacer has a plurality of elongated members having a width. The elongated members are each oriented substantially perpendicular to the first and second outer skins. The expandable spacer has a plurality of expandable core liners extending between the elongated members. The expandable core liners support the elongated members with respect to the first and second outer skins in a perpendicular direction. The elongated members and the expandable core liners have a reduced width portion formed therein that corresponds to the molded portion of the outer skins.

Abstract: A glass block construction kit comprises a peripheral frame with inwardly directed lips on its opposite sides and an interior frame having an outer wall held by the lips on the peripheral frame. The peripheral frame is made from a plastic material such as vinyl and the like while the interior frame is made of a more rigid material. The interior frame also includes a plurality of frame members which form glass block pockets. Glass block retainers are mounted on both sides of each frame member. These retainers are again made of plastic, preferably the same material used in forming the peripheral frame.

Abstract: A method of making a flat-skinned door which simulates a three-dimensional molded skin door, and corresponding product, are disclosed. The method includes the steps of applying a basecoat(s) to the door skin, applying a woodgrain puff-ink to the skin over the basecoat in order to simulate woodgrain patterning, utilizing a printing roll(s) to print a photographic image on the door which simulates a three-dimension molded door skin, and forming a hardened non-stainable polymerized coating over the image applied by the printing roll(s). In such a manner, a flat skinned door may be made which simulates a three dimensional molded skin door.

Abstract: A window with an outer frame for mounting in a window opening in a structure this outer frame having on the sides thereof sash tracks or channels facing one another across the window space. Window sashes containing a single window pane are positioned between and securable in such channels in a manner allowing them to be slid therealong for opening and closing the window. Protuberances extending from the window frame secure the window sashes in the channels so as to allow sliding therealong, and removing such window sashes from those channels is accomplished by removing the protuberances therefrom. A blocking panel is positionable in the outer frame in the absence of such window sashes, and can be removed therefrom in the absence of such sashes but not when the sashes are present.

Abstract: A glazing bar system for utilization within glass panel roofing. A support beam has upper and lower capping located thereon. An end cap is disposed along an end of the support beam so as to present a finished appearance when a lower end of the support beam is aligned along an eaves portion of a building structure. A bracket is secured to the end of the support beam by means of a screw inserted through a screw port of the support beam. The end cap having L-shaped projections forming two channels which allow the end cap to be slidingly engaged over ends of the bracket.

Abstract: A simulated panel door structure formed from a flat surface door utilizing an endless groove formed along the flat surface and etched to a uniform depth. The endless groove possesses a base surface and first and second side walls extending outwardly from the base surface. The second side wall of the groove is positioned outside the first side wall toward the periphery of the door. An insert having a lower surface and first and second side walls positions within the endless groove such that the lower surface of the insert lies adjacent the base surface of the groove. The first side wall of the insert lies adjacent a beveled surface of the veneer and extends no further outwardly than the flat surface of the door. The second side wall of the insert lies adjacent the second side wall of the groove. The insert further includes a lateral surface spanning the first and second side walls with a depression therealong.

Abstract: A hub assembly (10) for use in arranging muntins (22) across a window pane includes at least first and second covers (12, 14) which are snap-fit and frictionally held together and which define at least one arcuate track (70) that is adapted to slidably receive carrier members (20) for interconnecting the muntins (22) to the hub assembly (10). The arcuate track (70) coacts with the carrier members (20) to retain the carrier members (20) in selective angular positions about the hub assembly (10). The hub assembly (10), which is semi-circular in plan view, can be selectively attached directly to a window frame, or to another similarly constructed hub assembly (10) to form a circular overall hub assembly.

Abstract: A raised wall panel which includes a frame, a raised panel and a molding positioned between the two. The frame, having four frame members, is arranged in a "picture frame" configuration and attached to plywood fixed to a wall structure. The frame members are constructed of a base material, such as composition board or inexpensive plywood, which is covered by a decorative wood veneer. The raised panel is positioned within the frame using a spacing tool to ensure that the open area between the frame and the raised panel is uniform and the raised panel is attached to the plywood. The raised panel is also constructed of a base material which is covered by a decorative wood veneer. The molding has a built-up frame portion having a frame lip and a built-up panel portion having a panel lip. The molding is then positioned between the frame and the panel section such that the frame lip overlaps the frame member and the panel lip overlaps panel section.

Abstract: A door is provided that has a first outer skin and a second outer skin. A first and second outer skins are separated by frame to form a hollow core between the frame and the outer skins. An expandable spacer is connected to the first and second skins to hold the first and second skins a predetermined distance apart. The expandable spacer has a plurality of elongated members having a width. The elongated members are each oriented substantially perpendicular to the first and second outer skins. The expandable spacer has a plurality of expandable core liners extending between the elongated members. The expandable core liners orient the elongated members with respect to the first and second outer skins in a perpendicular direction. The elongated members having a reduced width portion formed therein that corresponds to the molded portion of the first skin. A reinforcement layer may be applied to the elongated members at the narrowed portion to support the narrowed portion.

Abstract: A door has a pair of outer skins separated by a frame to form a hollow space therebetween. An expandable spacer core is connected between the pair of skins. The expandable spacer core has a plurality of elongated members each oriented perpendicular to both outer skins. A plurality of expandable core liners extend between elongated members to position the elongated members with respect to each other and to the outer skin. The expandable spacer cores are formed by gluing strips of expandable core liners between corrugated layers so that the corrugated layers are held together by the expandable core liners. The corrugated layers are cut in a direction across the expandable core liners. Once the expandable spacer cores are formed, an adhesive is placed on the edges of the expandable spacer core and the expandable spacer core is affixed to the inner side of the outer skins of the door.

Abstract: A door pressed from fiberboard opposing door forms to define elongate depressions of timber-like appearance disposed around the door or parts thereof within an elevated outer periphery portion of the door. Each of the depressed elongate timber-like panels surround a number of elevated door panels that are removed. The facing set of door forms have spacers and edging members, wherein the edges of the door forms from which the elevated panels are removed have plastic edging strips disposed on the opposing edges of each face of the door forms to support glazing therein.

Abstract: The window sash of this invention employs strips of extruded plastic materials which are connected together by mechanical fasteners into an inner sash. The inner sash has barbed protrusions formed on the interior and the exterior which define interior and exterior channels into which wooden or metal trim members may be engaged in snap-fit relation. In operation, individual trim strips are first combined with interior sash elements. These sub-assemblies are then joined with L-shaped injection molded keys. The trim members, plastic keys, and plastic inner sash are then clamped in a frame and stapled together. The exterior sash trim or ring is assembled separately and brought together for assembly with the inner sash. A mastic adhesive is applied to the inner sash, a thermopane window light assembly is disposed on the adhesive, and a bead of adhesive is applied to the rabbet of the exterior ring which is then press-fit into engagement with the inner sash.

Abstract: A cruciform joint of glazing bars comprising a glazing bar extending between and perpendicular to an aligned pair of glazing bars. Each glazing bar has a central load bearing portion (16) which has a solid snapfit formation (22) at one end, interconnected to a solid end portion (23) by a hollow mid-portion (21). A base portion is interlocked with the solid end portion (23) and a clamping section is snap-fitted onto the snap-fit formation (22) so that a respective pane of glazing material can be clamped therebetween. The aligned pair of glazing bars are connected by a key (19) which is placed through a keyhole (18) in the intervening glazing bar and which extends into the hollow mid-portions (21) of each of the aligned pair. The keyhole (18) is formed solely through the hollow mid-portion (21) of the glazing bar, and the key (19) is inserted through the aperture (18) and then rotated and snap-fitted into a locked setting.

Abstract: A frame assembly of the knock-down type in which the component parts can be shipped or transported in a knock-down condition and readily constructed with a minimum of tools or no tools, and disassembled when desired. The frame assembly includes at least one pair of spaced vertical stiles and at least one pair of horizontal rails substantially orthogonal thereto, and associated connecting elements for connecting the stiles and rails, one of the connecting elements being joined with a stile at a corner connection thereof and another of the connecting elements being joined with a rail at a corner connection thereof so that a pair of the associated connecting elements joins one of the stiles to one of the rails, and all of the stiles and rails as appropriate are joined to each other.

Abstract: A plurality of elongated thermoplastic bar members, each bar member defining a pre-determined width, and a pre-determined thickness which is less than its width, and each bar member being made up of an outer facing panel, and an inner wall and intermediate spacer walls extending between the facing panels and inner walls at intervals, and defining therebetween generally elongated passageways, and at least some of the bars having interlock formations formed on the exterior of the facing panels, so that adjacent bars may be interlocking together, the interlock formations defining continuous tongue and groove slide members, permitting one bar member to slide relative to its adjacent bar members, and at least one of bar members having one panel free of the interlock formations, so as to provide a smooth finished exterior surface.

Abstract: A universal intercept clip connects a muntin bar to a supporting frame member of a window. The clip includes a muntin bar connecting portion, a supporting frame member connecting portion and connecting structure for removably connecting the muntin bar connecting portion to the supporting frame member connecting portion.

Abstract: A bearing element for a substantially panel-like component having a support rail adjustably arranged thereon. The support rail may be connected to another bearing element of another component. The bearing element includes a recess in which the support rail is received at least in part. The bearing element includes a base member fastened by means of a pressure element to the component. The support rail may have a straight or angular shape and may include a hinge or joint in its central portion.

Abstract: A translucent panel is provided to simulate the surface of a glass-block matrix. The panel is impressed with a rectangular grid to simulate the perimeter of a plurality of glass blocks in a matrix and with a texture pattern simulating the pattern or texture of glass blocks. Two panels are mounted in a window frame in a spaced parallel configuration to simulate a glass-block window. An interior partition or wall is constructed with panels on either side of an interior framework. The partition is finished by suitable end caps, corner pieces and top caps. The translucent panel is preferably made by feeding a hot sheet of glass or plastic between two opposed rollers each having a suitable pattern thereon.

Abstract: A closure, such as a door or window unit, and a joint for such a closure are provided. The closure has an inside and an outside, and includes a plurality of first frame members alternately joined to a plurality of second frame members to form a planar frame, and a panel member is positioned within the frame. The joint, formed at each location where a first frame member abuts a second frame member, includes an end area of a first frame member, a mating area of a second frame member and a sealing member. The sealing member is disposed at the interface defined between the end area and the mating area to establish a weather-resistant barrier between the inside and the outside of the closure. A method for fabricating a closure is also provided.

Abstract: A modular anti-warping door panel for use in the construction of a door or door panels. The door panel comprises a rigid reinforcing frame constructed of material resistant to warping. The reinforcing frame is defined by two spaced apart elongated rigid members and one or more transverse spaced members. The reinforcing frame is retained in an elongated butte stile and a lock stile and a top and bottom rail. The stiles and rails are formed as hollow members of rectangular cross-section forming a peripheral panel frame. The two elongated rigid members are retained along an inner peripheral channel of the rectangular door frame. Panels are retained in an opening defined by the inner peripheral channel. A rigid post is secured in the butte and lock stiles along an outer edge portion thereof and concealed within the hollow stiles.

Abstract: A new interior wall construction relies on a new metal stud. The new stud is a U-shaped channel having parallel sides and a generally flat bight. The bight is recessed interiorly of its edges and mounts a wood block. The block is secured by diagonally inserted screws piercing the interior corners of the recess. A sheet rock installer mounts the plaster board so as to have common edges with the stud. Thereafter a carpenter inserts a wood blocking in the stud prior to mounting the door jamb.

Abstract: A door/window construction in which a unitary sheet of light transmissive material such as transparent or translucent glass or plastic is covered with masking material and provided with a plurality of small holes spaced apart at predetermined intervals. Fasteners are inserted in the holes and project outwardly to engage corresponding recesses in muntins that are thereby positioned and fastened on the sheet so as to give the appearance of a multi-panelled door/window. Fastening staples are provided to hold exposed portions of the muntins in place when stiles and rails of the doors/windows are attached. Also included is the method of manufacture and assembly of the doors/windows.

Abstract: A decorative art glass grid system is intended for use in a double window pane unit. The unit itself fits into a window frame. The grid system comprises at least two notched elongated members to form a grid, a set of holding feet slidably positioned in the terminuses of the elongated members and, optionally, a set of resting pads positioned in the elongated members. Each notched elongated member has a first groove extending along one wall of the member to receive an edge of an art glass pane, a second groove extending along an opposite wall of the member to receive an edge of another art glass pane, an interior channel, and a notch in a third wall of the member. The notch is configured to have a dove tail-shaped receiving section and a centered recessed section to receive another notched elongated member in a locked and substantially wobble-free manner.

Abstract: A method of simulating a solid wood multipanel door is disclosed. Predetermined portions of the thin sheets of wood which are typically used to construct hollow core doors are cut away. The portions are used to construct artificial door panels, which are replaced into the openings in the hollow core door from which they were cut. Molding is then placed around the artificial door panels. In an alternative embodiment, Wainscott panels may be constructed utilizing the inventive technique.

Abstract: A new traffic impact door construction is provided together with a method of making same. The door body comprises an internal frame and front and back door face panels that are ultrasonically bonded to the frame, with the frame being constructed from extruded thermoplastic beam-type frame members. At least one of the frame members serves as a door post mount and other frame members serve as a supporting frame for a window pane. The frame members also are adapted to serve as mounts for flexible and resilient door edge seals.

Abstract: A muntin bar joiner includes adjustable tabs for attachment to muntin bars. The tabs may be rotated about an axis to customize the joiner for holding the bars in accordance with the muntin assembly design. The tabs move in a common plane when rotating, while parts of the tabs may move over one another. The tabs are interchangeable to accommodate different bar designs.

Abstract: A door having an appearance of being entirely made of wood which is provided by panels of wood veneer adhesively secured to a core of thin gauge sheet metal panels. The sheet metal panels are adapted for this purpose by being imparted with horizontal and vertical fold lines which enable the panels to resist flexing and bending out of plane, to thereby contribute to anti-warping and other noteworthy features.

Abstract: A grille fastener assembly for releasably securing a wooden grille to a window sash having a generally rectangular-shaped frame with a single pane structure fixed therein includes a spring-loaded plunger assembly. The spring-loaded plunger assembly consists of a base portion, a plunger member and a coil spring. The plunger member and the base portion are movably secured together so as to sandwich the coil spring therebetween. The spring-loaded plunger assembly is telescopingly received in longitudinally extending openings formed in the terminal end portions of the grille bars and includes an enlarged end which is biased outwardly thereof and into respective central openings formed in grille strikes for releasably securing the grille to the sash frame.

Abstract: A fire resistant panel door is constructed from panels, stiles, mullion and rails having a core of fire resistant material. The door components are joined together so that the fire resistant material extends substantially continuously from side to side and from top to bottom of the finished door. The fire resistant core of each door panel is recessed within the fire resistant core of the associated rails and stiles to reduce air infiltration through the door which can compromise the door's fire resistance.

Abstract: An improved strength and decoration window grid system is provided for a window having a sash and at least one window pane. The system consists of a mechanism for connecting vertical extruded profile bars to horizontal extruded profile bars to form a strong grid pattern. The ends of the vertical extruded profile bars and the ends of the horizontal extruded profile bars are secured to the inner sides of the sash against the at least one window pane of the window to divide the window pane into a plurality of lights. This will substantially increase strength to the window to prevent twisting, horizontal load pressure and vertical load pressure thereto, while giving real optical enrichment to the window.

Abstract: A method to assemble a two sided colonial grid assembly for a closure and an assembly, such as but not limited to a glass pane door or window wherein the grid structure incorporates both real and false muntin bars as well as integral and false glazing beads. The assembly is structured to allow a snap-fit type of attachment of the glazing beads into the grid assembly and in engagement with the glass panes such that the entire assembly is structured to facilitate and reduce cost of assembling and manufacturing while providing an authenticate and aesthetically pleasing appearance.

Abstract: A composite exterior door structure comprising an inner frame of transversely connected elongated structural members formed of synthetic low thermally conductive material. The structural members have opposed parallel flat side walls and edge walls, the latter being formed with connecting channels. The structural members are interconnected to form a rectangular frame. Connectors of low thermally conductive material are connected to the connecting channels of inner ones of the edge walls of the structural members. An outer metal door covering is connected over an outer one of at least some of the opposed parallel flat side walls of the structural members and the connectors by displaceable connections to permit the outer door covering to shift due to expansion and contraction independently of the structural members. An inner door covering is immovably secured to an inner one of the opposed parallel flat walls and thermally insulated from the outer door covering.

Abstract: An expansion joint for doors of cabinets or for entry doors having a central panel or the like encompassed by a surrounding frame employs small plastic or rubber balls of limited compressibility or hardness dimensioned to tightly fit into tongue and groove joints between panel and frame to accommodate expansion of frame and panel to protect corner glue joints from cracking or contracting.

Abstract: Spacer frame assembly for an insulating glass unit comprising a plurality of spacer frame elements connected to form a generally planar polygonal frame. Each frame element defines an impervious outer peripheral wall and first and second lateral walls, integral with the outer wall, extending inwardly from opposite outer wall sides parallel to the frame plane. The outer wall and lateral walls extend substantially continuously about the frame polygon and are joined adjacent their ends by connecting structure. The connecting structure comprises a connecting tongue continuous with and projecting from an end of one frame element. The other frame element end has a tongue receiving structure and the element ends are telescopically joined. Muntin bars are secured to the frame elements by latching structures which assure quick muntin bar assembly.

Abstract: A window grill assembly includes a window frame having a window opening therein. A grill frame is positioned on one side of the window opening, and retaining frame is positioned on the opposite side. The grill frame includes one flange which engages the front surface of the window frame, and the retaining frame also includes a retaining flange which engages the rear surface of the door frame. A second grill flange extends into the window opening and engages a second retaining flange also within the window opening. The second grill flange and the second retaining flange are secured together to hold the grill frame, the window frame, and the retaining frame together.