Abstract: A loading dock shelter having rotating seal members is provided for forming a relatively air-tight seal between the dock opening and a truck so as to prevent air movement between the inside and the outside of the building during loading and unloading operations. The loading dock shelter has a frame assembly rigidly attached to the periphery of the dock opening and seal members rotatably mounted to the frame assembly on either side of the dock opening so that the truck may fit therebetween and form a seal between the exterior walls of the truck and the seal member. The seal members are rotatably movable between a first (open) position and a second (sealing) position in response to the movement of the truck into and out of the loading dock. In the first position, the seal members project into the path of the truck so that the truck engages the seal members as it backs into the loading dock.

Abstract: A do-it-yourself kit for retrofitting without special tools protective weatherproof cladding on an existing door or window frame assembly. Three elongate one-piece sections of extruded plastic are prefabricated in transverse cross section to match the profile of the exterior exposed surfaces of two sides and the header of the frame assembly. Lengthwise portions of each section are folded to grip and secure under friction door stop or sash guide surfaces of the frame assembly. Tabs extending from mitered upper ends of the side sections underlap mitered ends of the header section. Templates are included in the kit for cutting the lower ends of the side sections to match the profile of the door threshold or window sill.

Abstract: A window frame assembly including a weather resistant cladding structure having a telescopic expansion joint. The cladding, preferably made of PVC, has side jamb members which are hollow and which form telescoping members in conjunction with corner pieces or end caps which engage with the nose of the sill cladding. The window frame assembly is made up of wooden side jambs, a wooden upper jamb and a wooden sub sill to which the cladding structure is attached. The telescopic members having the expansion joint permit thermal contraction and expansion of the cladding structure relative to the wooden jamb and sill members.

Abstract: A frame assembly for a door light is formed with inner and outer half-frames sandwiching a translucent panel. The half-frames are separately and similarly formed of sheet material, each with a plurality of substantially similar side members defining a closed polygon. Each side member includes, in cross-section, a flat portion for supporting the frame in an opening in a support, a face portion extending from the flat portion towards the center of the polygon, a third portion extending inwardly from the face portion toward the other half-frame and to a position adjacent the translucent panel, a fourth portion extending from the third portion parallel to the face portion and away from the center of the polygon, and a fifth portion extending inwardly from the fourth portion toward the other half-frame and about a peripheral edge of the translucent panel. Fasteners couple the half-frames and secure the half-frames in the support opening.

Abstract: An improved door jamb and brickmold assembly has a rectangular wooden jamb and a unitary co-extruded thermoplastic member mounted to said jamb and defining both the door stop and the brickmold of the assembly. In one embodiment, an elongated securing tab projects from the brickmold and is positioned to overly the exterior surface of a building in which the assembly is mounted for securing the brickmold to the building.

Abstract: A corner piece is used with siding trim. At corners where strips of siding trim meet, the trim may be square cut and a corner piece inserted between the two square cut ends to finish the corner without using a miter or butt joint. The corner piece has a facing block that fits between the ends of two adjacent trim strips and two connector strips that project from two sides of the facing block to engage in the channels of the two trim strips. The coupling strips are preferably designed to snap fit into the trim strips.

Abstract: A component shutter having a plurality of end caps for closing off the outermost longitudinal ends of each of a pair of side rails of the shutter and providing a decorative, finished appearance to the outermost longitudinal ends of each of the side rails. The end caps comprise a top portion and a tongue portion, with the tongue portion being sized to fit within a pocket formed between the side rail and either a top or bottom end rail. The tongue portion is slidably inserted into the pocket. The end cap forms a finished appearing edge surface for an end of the side rail of the shutter.

Abstract: A seal assembly, which minimizes or eliminates infiltration of rain water along the roof of a truck parked in a loading dock, generally comprises a downwardly inclined roof panel which extends outwardly from the building wall and collects the water. A gutter member, supported by and disposed along the length of the roof panel, collects water runoff from the building walls and the roof panel and channels the water away from the center of the door opening and towards either side of the loading dock opening. The seal assembly also comprises a seal member mounted to the roof panel and/or the gutter member so that it generally hangs into the upper portion of the door opening and engages the top portion of the truck so as to sealably engage the truck roof and form a water blocking barrier, thereby minimizing or eliminating infiltration of rain water along the truck roof.

Abstract: A plastic building product comprising a plastic body having a base, an integral continuous wall extending from the base, and a plurality of integral wall segments spaced radially outwardly from the base and defining a space therebetween, a plurality of plastic flange members. Each flange member including spaced integral walls connected by an integral wall. One of the walls of each flange member extending into the space between the peripheral wall and the wall segments of the plastic body.

Abstract: A vinyl door frame assembly for a frame door opening is provided with a plurality of metal jamb backing members for attachment to the unfinished door frame. A set of paired first and second vinyl jamb members are provided, wherein the first vinyl jamb member sections are attached to the metal jamb backing members by means of threaded screws, and the second section of vinyl jamb members are slid against the first vinyl jamb members and held in position by means of flat head screws interfitting within slots of the metal jamb backing members, and into snap fit engagement with the first section of vinyl jamb member to complete the assembly.

Abstract: Trim bands and a trim band system for custom fitting siding is presented. The trim bands include a base band, a frieze band, a mid band, and an inside corner band which function to retain the rough edges of siding panels without exposing channels thereby providing a custom fit and enhanced aesthetic appearance. The trim bands are one piece continuous members which comprise varying numbers of portions which depend on the structural area of the building for which the trim bands are designed. The trim band system includes securing a plurality of trim bands to the exterior surface of a building followed by the placement and attachment of siding panels in conjunction with the trim bands to conceal all exposed edges of the siding panels without exposing channels or troughs formed within the trim bands.

Abstract: A vehicular loading dock shelter with opposed hinge gap and head bag closures. For the hinge gap closures, reinforced side curtains seal corner hinge areas, as a truck/trailer is backed into the loading dock, to thereby form a protective weather seal for the sides of the dock. Excessive pull on opposed side curtains is compensated by a pair of single leaf spring-loaded hinge assemblies, connecting the respective curtains to corresponding shelter side frames of the front walls. These hinge gap closures having side curtains for are each adapted to set the side curtains parallel to the door of the dock in the normal closed position, when the dock is not in use.

Abstract: A facing for a wall end opening which comprises first and second longitudinally extending strip members extruded of synthetic plastics material. Each strip member is formed with a wall face engageable part and a wall end engageable part. The wall engageable part of the first strip includes a stop protrusion formed integrally therewith, having a slot formed therein to accommodate a variable portion of the wall end engageable part of the second strip whereby the depth of the facing can be varied, in use. The stop protrusion portion together with the further portion of the first strip are of hollow triangular transverse cross-section and are hingedly located to the wall end engageable part of the first strip to facilitate simultaneous printing of the outer surface, in use, of the wall end engageable part and the stop protrusion portion.

Abstract: An octagonal plastic window assembly is provided for mounting to an exterior surface of the building wall or doer. The window includes two spaced window panes, one of which is glass and the other plastic. An exterior trim ring is provided to circumscribe the window to give a finished appearance to the exterior of the window. An octagonal liner assembly is provided comprising a plurality of interconnected liner panels connected together by a snap fit and received within a rough opening in a building wall or door. An interior trim ring is provided for attachment to the liner assembly to give a finished appearance to the interior side of the building wall or door. The plastic window assembly can be installed without the use of fasteners.

Abstract: An extension jamb for rapid attachment directly to a frame to form an extension on the frame, with the extension jamb having a top surface for engaging a frame, with the extension jamb characterized by having a transverse elongated recess therein and an opening in the extension jamb, with the opening temporarily holding a fastener in a ready-to-use condition, and the opening having a central axis substantially parallel to the top surface to enable one to drive a fastener through a portion of the extension jamb and into the frame to enable securing the extension jamb to the window frame.

Abstract: A loading dock shelter having a rotating seal member is provided for forming a relatively air-tight seal between the dock opening and the truck to prevent the movement of air between the inside and outside of the building during the loading and unloading operation. The seal members are rotatably mounted to the frame assembly for rotation between a first (open) position and a second (sealing) position in response to the movement of the truck into and out of the loading dock. In the first position, the seal member is spaced outwardly from the wall and the loading dock so that it does not interfere with the normal operation of the loading dock and so that it projects into the path of the truck for engaging the truck as the truck backs into the loading dock.

Abstract: An octagonal plastic window assembly is provided for mounting to an exterior surface of the building wall or door. The window includes two spaced window panes, one of which is glass and the other plastic. An exterior trim ring is provided to circumscribe the window to give a finished appearance to the exterior of the window. An octagonal liner assembly is provided comprising a plurality of interconnected liner panels connected together by a snap fit and received within a rough opening in a building wall or door. An interior trim ring is provided for attachment to the liner assembly to give a finished appearance to the interior side of the building wall or door. The plastic window assembly can be installed without the use of fasteners.

Abstract: A design of a structure for plastic casing to cover a door frame, particularly an improved structure and installation method for the replacement of the casing of the door. The structure mainly uses a front slat and a rear slat to fit together so as to cover up the outer layer of the existing old casing on the wall. The width of the structure can be adjusted to the width of the old casing. Nails can be used to feed through the holding slat for positioning and securing, a plastic cap can be used to cover the ends of the front and the rear slats so as to form a completed ornamental casing, thus saving the time and manpower to remove the old casing as well as preventing the damage from the removal of the old casing. In addition, the decorative assembly gives a strong-binding, secure and practical structure of a plastic casing for a door frame.

Abstract: A jamb assembly is used to form a door frame system for installation within a wall having an opening for a door. The jamb assembly comprises a first elongated member having an L-shaped shoulder along one side of the member. A groove running parallel to the shoulder extends the length of the member. The jamb assembly has a second elongated member identical to the first member. The members are inverted relative to one another so that the L-shaped shoulders of the first and second members fit together to form an expandable base of the jamb assembly. A third elongated member has a tongue projecting on one side thereof that extends the length of the third member. The tongue is formed to fit into the groove of the first or the second elongated member to form a cap for the jamb assembly. The tongue extends beyond the ends of the first and second members when the jamb assembly serves as a head jamb assembly.

Abstract: An adjustable door frame includes a latch jamb, a hinge jamb, two closure jambs, a base header and a closure header, each of which is unitarily formed. The jambs and headers are adjustably connected to accommodate variations in wall thicknesses. Each of the hatch jamb, hinge jamb and base header has a trim section overlying the wall, an inside section extending into the doorway opening, a door abutment section extending perpendicularly into the doorway and a pair of parallel flanges extending perpendicularly from the abutment section and defining a slot. Each of the closure jambs and closure header has a trim section for overlying the opposite wall surface, an inside section extending into the doorway and a tongue section. The slots frictionally engage the tongue sections.

Abstract: A loading dock door seal structure wherein compressible members or pads are located adjacent the top and sides of the door to engage the rear end of a truck cargo body that is backed into loading and unloading position. The pads serve to provide a seal, however, they are spaced outwardly away from the wall of the building adjacent the door frame to leave gaps. Brackets are provided at the top and sides of the door frame and secured thereto, but extend outward and have lateral legs parallel to the building wall that serve as a mount for the seal pads. The brackets also have longitudinal legs extending perpendicular to the doorframe and outwardly therefrom in the gap between the pads and the doorframe. Flexible fabric seal strips are secured to the longitudinal legs of the bracket to close the gaps between the pads and the wall building.

Abstract: A molding system for use in the replacement of articles, such as doors and windows. More specifically, the molding system is for use in the replacement of windows and door in stucco buildings. A method is disclosed for installing the molding which includes making a uniformed cut about the periphery of the article being replaced, removing the outermost surface of the supporting structure defined between the uniformed cut and the periphery of the article being replaced, replacing the existing article with a replacement article, and installing the molding system around the perimeter of the replacement article. The molding system comprises a first member which is fastenable about the periphery of an article and which includes a tab that is engagable with a second member. The second member has a first return engagable with the tab of the first member and a second return engagable with a groove around the perimeter of the replacement article.

Abstract: An aluminum frame window includes an outer frame assembly peripherally attached with a water-proof strip assembly, an inner frame assembly fastened to the outer frame assembly on the inside to hold a top-hinged outswinging windowpane and peripherally attached with a water-proof strip assembly, wherein air vents and air fan are made on the top on the inside between the outer frame assembly and the inner frame assembly on the outer frame assembly for ventilation.

Abstract: A Profile in metal (1) and wood (3) with the interposition of a binder layer (2), characterized in that the wood (3) is divided into a plurality of laths placed tightly one close to the other adjacents (31,32,33, . . . ) held together by at least said binder layer (2,2') conveniently elastic in order to consent a curvature of the entire profile with reciprocal longitudinal sliding between said laths of wood (31,32,33, . . . ).

Abstract: An adjustable door frame has adjustable width jambs and header. Each of the frame elements consists of two elongated components held together with interengaging rails and channels on the two components. In use, the frame elements are adjusted to the desired width and are locked in place with self tapping screws through the rails and channels. This allows the elements to be installed in a door opening in the same way as a fixed width door frame and without the use of screws through the door casing.

Abstract: A prefabricated window stool/apron unit (10) comprises a ledge member (12) and a skirt member (14). The ledge member (12) has an essentially flat top horizontal surface (16) and an essentially flat back vertical surface (18). The skirt member (14) has an essentially flat vertical back surface (20). The skirt member (14) is positioned beneath the ledge member (12) whereby the back surfaces (18,20) of the ledge member (12) and skirt member (14) are essentially flush with one another to form a flat abutment surface (22). The skirt member (14) is oriented to receive fasteners (24) which extend orthogonally with respect to the abutment surface (22). A vertical front surface (30) of the ledge member (12) and a vertical front surface (32) of the skirt member (14) are contoured. In one embodiment, a prefabricated window sill unit (10') has a recess (40') provided therein.

Abstract: A one-piece metal frame fin is locked to the wooden frame members of a window unit by exterior cladding. A notch in the frame members receives the inner portion of the nailing fin while the outer portion of the fin is recessed into the wood when the fin is in its closed position for storage, transport and use in abutting frame members of multiple window units. An L-shaped corner nailing fin is carried on one of the frame fins and can be pivoted into locking engagement with the adjacent frame fin during installation of the window unit. In the case of joined multiple window units a mullion cover extends over the adjacent ends of the frame nailing fins and is locked to the outer nose portion of the exterior cladding. Use of foam sealing strips eliminates the need for on the job site caulking.

Abstract: A method and molding system for use in the replacement of articles, such as doors and windows. More specifically, the method and molding system for use in the replacement of windows and door in stucco buildings. The method includes making a uniformed cut about the periphery of the article being replaced, removing the outermost surface of the supporting structure defined between the uniformed cut and the periphery of the article being replaced, replacing the existing article with a replacement article, and installing the molding system around the perimeter of the replacement article. The molding system comprises a first member which is fastenable about the periphery of an article and which includes a tab that is engagable with a second member. The second member has a first return engagable with the tab of the first member and a second return engagable with a groove around the perimeter of the replacement article.

Abstract: A prefabricated window stool/apron unit (10) comprises a ledge member (12) and a skirt member (14). The ledge member (12) has an essentially flat top horizontal surface (16) and an essentially flat back vertical surface (18). The skirt member (14) has an essentially flat vertical back surface (20). The skirt member (14) is positioned beneath the ledge member (12) whereby the back surfaces (18,20) of the ledge member (12) and skirt member (14) are essentially flush with one another to form a flat abutment surface (22). The skirt member (14) is oriented to receive fasteners (24) which extend orthogonally with respect to the abutment surface (22). A vertical front surface (30) of the ledge member (12) and a vertical front surface (32) of the skirt member (14) are contoured.

Abstract: An inflatable dock seal for mounting about a loading dock opening to provide a cushioned seal against a vehicle has an upper inflatable curtain and a pair of inflatable side members; the side members inflate laterally of the opening directly towards each other along a phantom axis of inflation which is perpendicular to a phantom axis of entry of the opening; the side members are in particular L-shaped and inflate laterally of the L-shape; the inflatable foot of the L-shape forming a bottom seal extending from the wall to the leg of the L-shape spaced from the wall; the spacing of the leg of the L-shape from the wall provides a window for entry of natural light to the opening.

Abstract: Improvements to a door frame are provided, comprising the provision of in a jamb member of the frame a slot that receive spaced apart legs of a hardware element, the said adapted to frictionally hold the position of the hardware element in the slot, and further comprising means for mounting the frame member to adjoining studs and headers by means of resilient elements adapted to provided angular adjustment of the members. There is further provided means to adjust the length of the frame elements by means of an extension element, which is used in combination with a decorative cover. A decorative trim element is further provided that resiliently mounts to the frame members and is adapted to press against the adjoining wall to provide a smooth junction therewith.

Abstract: A facia system for shielding the periphery of the framework of a building opening adjacent a building surface including a first channel extending orthogonal to the building surface, a second channel extending parallel to the building surface and a facia having first and second planar portions joined together to define an L-shaped cross-section; wherein the facia has edges for insertion into the first and second channels.

Abstract: An inflatable dock seal includes inflatable top and side seal sections which are adapted to be secured to a building wall adjacent the top and side extremities of a loading dock opening therein, an inflating mechanism for inflating the top and side seal sections and a retracting mechanism for retracting the top and side seal sections when the inflating mechanism is deactuated. In one embodiment of the dock seal the retracting mechanism includes constant force springs for retracting the top and side seal sections thereof and in a second embodiment the retracting mechanism includes a constant force spring for retracting the top seal section thereof and a pair of resiliently expandable cord elements for retracting the side seal sections thereof.

Abstract: A fire retardant window construction for a fire door comprises a trim strip having inner and outer members. The inner member is of a high density incombustible mineral material or ceramic and is nailed in position to securely and uniformly hold the pane of glass in the door opening. The outer trim member is of a fire retardant particle board and has an exposed wood veneer facing throughout. An intumescent caulking compound is applied between an inner portion of the outer trim member and the pane of glass.

Abstract: A thermal break door frame assembly includes a pair of frame members defining a groove. The groove includes a mouth opening in the area of the edge of a closed door. A unitary weatherstrip is adapted to engage the edge of the door and includes an integral thermal break tail projecting through the mouth into the groove between the frame members.

Abstract: A casing trim, and the combination therewith of a flat vinyl strip, and the method of concealing building wooden casings and the like, wherein the casing trim is nailed to the edge portion of a casing, with one flange of the casing trim extending over an edge of the casing, and the perpendicularly directed face portion has a channel which receives and retains an edge of the flat vinyl strip.

Abstract: A window trimming construction includes a trim portion dimensioned and arranged to cover a portion of a surface of a wall in a position circumscribing a window opening extending through the wall that is defined by a window framing. The window trimming construction also includes a molding portion dimensioned and arranged to cover a portion of the window framing disposed intermediate the surface of the wall and a metal frame mounted on the window framing. The molding portion is arranged to enable adjustment of its width according to an amount by which the metal frame is recessed. One embodiment includes a molding portion having a plurality of sections that each cover a corresponding plurality of sections of the window framing, each one of the molding sections having first and second strips joined together with an adjustable joint that enables adjustment of the width.

Abstract: A frame-and-clip assembly utilized in the installation of a door frame to a compartment used for storage, baggage or the like, such as found in a recreational vehicle or other shell-like camper housing, although adaptable to compartments in other housings as well. The frame member includes first and second legs extending in opposite directions but joined by a spacer member between them, and a notch located in the corner region of the first leg and the spacer member. The second leg is adapted to engage the outer wall surface of a wall section forming the exterior boundary of the compartment. The clip gripping member comprises generally an upright member mounted on a base and extending over the length of the first leg, a barb on the base for attaching to the notch and a flange and lip for wrapping around the distal end of the first leg. A thinner cross-section in the base, adjacent the gripping member, facilitates the assembly.

Abstract: A door frame having a hinged jamb, a strike jamb and a header, each of which is in two parts. One part of each pair has a channel for slidably receiving a lipped segment of the other part. A lipped cover on the first part engages the lipped segment of the second part to limit movement of the two parts relative to one another. A biasing means on the first part urges the two parts against one another. The biasing means is rigidly affixed to the first part and extends across the channel to leave a small gap through which the lipped segment of the first part can be rotatably inserted.

Abstract: Inconspicuously attached separable assemblies, useful for door framing and the like, comprised of elongate, configurated "U" channel jamb runners secured to ordinary walls and partitions with fasteners, headed so as to cooperate with the jamb runners to engage elongate casing covers. Further disclosed are jamb runner corner alignment clips configurated for simple field attachment without tools or fasteners.

Abstract: A fire resistant dual layer, bimetallic door frame that comprises a fire resistant inner layer and an aesthetic outer layer. The inner layer, which is comprised of a first metallic material, has two parallel side portions and an upper horizontal portion. The outer layer, which is comprised of a second metallic material, has two parallel side portions and an upper horizontal portion, wherein each of the outer parallel side portions and the outer upper portion snugly receives the corresponding one of the inner parallel portions and the inner horizontal portion, whereby the bimetallic door frame is capable of resisting fire for at least 90 minutes.

Abstract: In a construction of a door in a motor vehicle, at a position below a triangular portion located at the forward or rear end of the door where belt lines of a main body of the door and a door window frame intersect at an acute angle, flanges are projected from top portions of a door inner panel and a door outer panel outwardly and inwardly in the thickness-wise direction of the door, respectively, and these flanges are welded to each other. These flanges are formed as a pair of triangular flanges projecting from the door inner panel and the door outer panel with vertexes of the triangular flanges opposed to each other, and the triangular flanges are overlapped at least at portions close to the vertexes thereof and welded to each other at the portions thus overlapped.

Abstract: An adjustable window framing structure for holding insulated window panes of various thicknesses and characterized by a thermal break between the outside and inside section of the framing structure.

Abstract: A steel door frame with thermal break characterized by a complete separation of exterior and interior components.

Abstract: A door jamb assembly for varied installations in a conventional rough cut door opening disposed in a wall, the assembly including first, second, and third elongated members for mounting on the sides and top of the rough cut door opening to form a pair of door jambs and a header. Two of the elongated members are configured so that they will mate on one end thereof to the first elongated member and on the other end thereof to a portion of the other elongated member between the ends thereof, these two elongated members being essentially mirror images of each other. As a result, a door jamb assembly is provided which can be installed in various width door openings to provide jambs for doors which can be hung with left or right hinges and which open in or out. Additionally, the width of the jambs and header is variable to accommodate walls of different thicknesses.

Abstract: Wall boardings having a series of wainscoting elements mounted in parallel and undercut at all edges. Strip-shaped lining mouldings are disposed both at the ends and between the wainscoting elements. The mouldings are overlapped along an adjacent undercut side edge of the wainscoting elements.

Abstract: A fire resistant, elevator hatchway door entrance for wall openings up to and including 10 feet in height, including first and second side jambs and a head jamb. Each side jamb includes a pair of upstanding, oppositely facing, metallic channel members dimensioned and coupled together to define both a structural box beam and a pocket for receiving the wall which defines the opening. The bight and one leg portion of one channel member define the jamb depth and reveal, respectively, of the side jamb, and the bight of the other channel member receives and shields an asociated J-strut at the wall-entrance interface. The remaining leg portion of the one channel member may cooperate with a member disposed on the trailing edge of the associated door panel to define a flame shield and a mechanical limit for preventing undue separation of the door panel from the side jamb.

Abstract: A door light having exterior and interior rectangular frames which are inserted into the door opening from opposite sides thereof. The exterior frame is molded of a plastics material as an integral, one-piece element having a rearwardly projecting tubular portion which slidably telescopes into a tubular portion defined by the interior frame. The interior and exterior frames slidably telescope until the flanges thereof abut the respective door faces to accommodate variable door widths. The exterior frame has a downwardly and forwardly sloped upper surface along the lower horizontal frame element which, in cooperation with an integral rear wall located behind the inner sash, causes all drainage along the sloped upper surface. Guide tracks are secured along the vertical sides of the frame and define outer and inner channels, with a top sash being stationarily fixed within the upper end of the outer channel.

Abstract: The lift landing door frame arrangement contains horizontally adjustable lateral caulking or sealing elements arranged at uprights of the door frame and a vertically adjustable top caulking or sealing element associated with the topside of the door frame. To avoid retouching due to the caulking elements at the time of placement of the lift landing door frame arrangement and to avoid the formation of gaps in the door frame after placement, each lateral caulking element comprises a rectangular sheet metal panel of a length which exceeds the height of the door frame. Each lateral caulking element engages with and is fixed to the interior of the related upright. Each lateral caulking element is also guided for simultaneous vertical and horizontal adjustment at a guide plate carried by the related upright. The vertically adjustable top caulking element is constituted by a U-shaped sheet metal strap which is disposed astride the front parts of the door frame and is laterally guided thereat.

Abstract: A shower door jamb assembly is comprised of a separate latch jamb member having a perpendicularly extending leg portion and jamb support wherein the jamb support includes a jamb support base, which adjustably holds the jamb member, and a mounting frame structure. The jamb support base has a transversely oriented receiving slot extending laterally through the base to releasably hold and constrain the movement of the extending leg portion of the latch jamb member. Adjustment screws releasably secure the latch jamb member within the jamb support base receiving slot whereby the latch jamb member, by a transverse plane adjustment, can be made to conform to the plane of the shower door before the latch jamb is secured into a fixed, completely installed position.