Abstract: Various embodiments for a drain debris straining assembly are described, where the drain debris straining assembly can be positioned inside a drain to collect hair and other debris. A drain debris straining assembly in accordance with an embodiment of the present application includes a basket assembly. The basket assembly includes a basket body surrounding a hollow core and at least one opening configured to filter fluid to entrap debris. The basket assembly further includes a flexible rib configured to compress against an internal diameter of a drain flange to form a seal between the basket assembly and the drain flange. The drain debris straining assembly may also include a pop-up assembly having an interference ridge sized and positioned to contact at least one inner wall of the basket assembly to retain a vertical position of the pop-up assembly relative to the basket assembly.

Abstract: A fluid valve with a modular and/or replaceable fluid control assembly is disclosed, and is configured and arranged to require maintenance over a product life of the fluid valve. The modular and/or replaceable fluid control assembly includes at least one portion including a setting or presetting configured and arranged to control fluid flow behavior in the fluid valve. The setting or presetting is useable to control fluid flow in the modular and/or replaceable fluid control assembly after an upgrade or replacement of at least a portion of the modular and/or replaceable fluid control assembly. Further, the setting or presetting enables the modular and/or replaceable fluid control assembly to retain the fluid flow behavior following one or more upgrades or replacements of one or more portions of the modular and/or replaceable fluid control assembly.

Abstract: An improved liquid run-off disposal system is described having an infiltration chamber (72) with first and second sidewalls (74). In cross-sectional view the first and second sidewalls (74) each include an inner surface 76 and outer surface (78), and each sidewall (74) includes a plurality of integrated louvre-shaped apertures (80). In cross-sectional view each louvre-shaped aperture (80) includes an upper surface (82) and a lower surface (84) which are angled upwards from the outer surface (78) and protrude inwards from the inner surface (76) into the interior of the infiltration chamber (72). The upper and lower surfaces (82, 84) comprise a plurality of angled sections, the angled sections being arranged so as to form a substantially vertical flow path through a portion of the aperture (80). The angled sections of the upper and lower surfaces (82, 84) are arranged at an angle and of a length so as to substantially overlap when viewed in a horizontal direction.

Abstract: A shear wall panel utilizes improved corner connection to effectively connect vertical chords and horizontal tracks of the shear wall panel to diagonal brace members and accommodating anchoring of the panel frame to horizontal building components. The panel frame uses structural corner brackets interiorly mounted to the corners of the panel adapted to receive anchor bolt connection adjacent the corner and diagonal bracing connection at a position spaced from the anchor bolt connection. Preferably, the shear wall panel is manufactured in a factory and shipped to a job site as a finished panel frame.

Abstract: A wall system includes at least one of a stud assembly, a top connector assembly, and a leveler assembly. The stud assembly is defined by a first and second upright that are attached by at least one web bracket. The web bracket includes a main body with extension arms on opposing sides. A notch is located at or near a free end of each extension arm. The notches are to be removably inserted over an edge of a respective aperture located on each of the first and second uprights. The top connector assembly includes a holder member to effectively raise and lower a top portion of the stud assembly. The leveler assembly includes a threaded rod to effectively raise and lower the first and second uprights relative to a base.

Abstract: A connection utilizing a joist hanger to hang a joist or beam from a wood structural support member such as a top plate or header in cooperation with a first plurality of fasteners such as screws and one or more substantially vertical fire-resistant panels such as drywall.

Abstract: Disclosed herein is a protective enclosure deployable within an interior space such as a school classroom or an office, or an exterior space. The deployable protective enclosure is to protect multiple occupants against projectiles such as flying or falling debris resulting from a natural disaster such as a tornado, hurricane or earthquake, or rounds fired. Occupants may be corralled into the protective enclosure and be protected against projectiles. The protective enclosure comprises three or more articulated partitions comprising ballistic materials or high-impact resistant materials. The protective enclosure may be affixed to one wall or two walls at a corner of a classroom, office or other space. The articulated partitions may be readily and rapidly secured in a protective configuration, forming a triangular, square or other polygonal enclosure. When not in use, the partitions may be folded and stowed against the walls.

Abstract: According to one embodiment, an insulated structure includes a frame comprising a plurality of wall studs coupled together and a plurality of foam boards attached to the frame to form a continuous insulative wall. A plurality of fasteners attaches the foam boards to the frame. Each fastener includes an elongate shaft and a cap. The elongate shaft is configured to penetrate through a foam board and into a wall stud to couple the components together. The cap is configured to be positioned atop a foam board to distribute a load relatively evenly to the foam board. A sealing tape is applied across seams between adjacent foam boards and over the fasteners' caps to seal the wall. A sealing caulk is applied to secondary fasteners and penetrations to seal the wall. In some embodiments, the structure has a fastener density of about 1 fastener per 243 in2 of foam board.

Abstract: A method is provided for supporting a recessed subfloor panel in a lowered position relative to an adjacent, primary subfloor, the primary subfloor being supported from beneath by one or more floor supports. The method includes positioning a spanning brace between a pair of floor supports and adjusting a length of the spanning brace such that the spanning brace engages and is supported by lateral, vertical sides of the pair of floor supports. A recessed subfloor panel is supported atop the spanning brace, the recessed subfloor panel being supported at a lower elevation than an adjacent, primary subfloor.

Abstract: A semi-permanent relocatable structure system can be used to construct structures of various sizes and configurations from various components. The components can include leg beams, eave beams, straight roof beams, and apex beams. The width of the structure can be adjusted by interchanging the straight roof beams. The structure can further be customized and adapted over time with various units so as to meet changing needs of the user.

Abstract: An acoustic housing, a light fixture, a suspended ceiling system, and a method of decreasing sound transfer from a light fixture in a suspended ceiling are disclosed. An acoustic hood for a light fixture in a suspended ceiling may include a partially enclosed space formed between a plurality of wall portions. A light fixture may include first and second layers that are coupled to one another and form a partially enclosed space. A suspended ceiling system may include the acoustic hood or light fixture. The method relates to disposing an acoustic housing spaced from the light fixture.

Abstract: A thermal wall system may include a plurality of blocks configured to interconnect with each other forming a monolithic wall. The plurality of blocks form a series of vertical interior cavities that each extend from a top of the plurality of blocks to a bottom of the plurality of blocks, and tubing vertically extends through the series of vertical interior cavities.

Abstract: Disclosed are methods for incorporating core materials such as phase change materials or admixtures into building materials like concrete. The methods use cenospheres, which are then etched and loaded with the core material. The composition can also be coated with a thin film. Compositions containing cenospheres loaded with the various core materials are disclosed, as are building materials containing such compositions.

Abstract: A roof structure supporting a roof comprising a truss and a joist supporting the truss, the joist having two elongated wooden beam members on the bottom of the truss connected with beam tie members comprised of a pair of congruent truncated mirror image parallelograms forming hexagons with mutually facing and abutting portions. Each beam tie member is connected to outer sides of top and bottom elongated wooden beams and is adjacent to the next beam tie connected to outer sides of top and bottom elongated wooden beams. The tied beams allow use of smaller, less expensive beam members yet providing good truss support in a joist.

Abstract: The present invention discloses a concrete-encased concrete-filled steel tube (CFST) column connection structure, a concrete-encased CFST column comprising such a connection structure, and a construction method for constructing such a concrete-encased CFST column, in the technical field of connection of concrete-encased CFST columns. Exposed steel tubes at the connection ends of two split concrete-encased CFST columns are connected through a core positioning sleeve of a concrete-encased CFST column connection structure. Exposed longitudinal bars of the two split concrete-encased CFST columns are connected through longitudinal bar sleeves of the concrete-encased CFST column connection structure. A space between the two split concrete-encased CFST columns is sealed by an external sealing sleeve of the concrete-encased CFST column connection structure; and the space in the external sealing sleeve and around the first and second exposed steel tubes is filled with a concrete slurry.

Abstract: One aspect of the disclosure is roofing shingle including a shim layer having a top surface, a first side edge, and a second side edge positioned opposite the first side edge. The roofing shingle also includes a top shingle layer at least partially laminated to the top surface of the shim layer, where the top shingle layer includes a first side edge offset a sidelap distance from the first side edge of the shim layer such that a side portion of the top surface of the shim layer is exposed, and a second side edge extending beyond the second side edge of the shim layer so as to overlap the second side edge of the shim layer by the sidelap distance.

Abstract: A balustrade apparatus for providing a balcony or increased floor space comprising a balustrade railing, a support fixing for retaining the balustrade railing in a retracted condition, a balcony platform which is pivotably engagable with the balustrade railing and an actuation means for actuating the balustrade railing between the retracted condition and an extended condition which is different to the retracted condition. In the extended condition, the balcony platform extends horizontally, with the balustrade railing being spaced apart from its position in the retracted condition to form a balcony rail for the balcony platform. The balustrade railing includes first and second railing portions which are movable relative to one another such that the balustrade railing is vertically extendible in at least the extended condition.

Abstract: The present invention provides a light weight, composite wall system. According to a preferred embodiment, the present invention includes a sound absorbing wall assembly system which includes a wall beam with detachably mounted wall panels. According to further aspects of the present invention, the wall beam preferably includes an upper surface, a lower surface and a back beam surface which is connected between the upper and lower surfaces. According to further aspects of the present invention, the upper surface of the wall beam includes a corrugated rib and an upper connecting flange, and the lower surface includes a lower corrugated rib and a lower connecting flange.

Abstract: A wall anchor for use in a cavity space to connect to a veneer tie that joins an inner wythe and an outer wythe of the cavity space. In one embodiment, the wall anchor system for use in a cavity space to connect to a veneer tie that joins an inner wythe and an outer wythe of the cavity space is disclosed. The wall anchor includes a straight elongated shaft with a longitudinal axis. The wall anchor also includes a first receiving space defined by a first curved section and a second receiving space defined by a second curved section that are both in the cavity space upon installation. A first end of the wall anchor fusibly attaches to the single location at an outward facing side of the wire element.

Abstract: An anchor for connecting a concrete layer of a floor to a cellulosic layer of the floor, the cellulosic layer comprising a plurality of cellulosic members joined together in a side-by-side arrangement, the anchor including a first portion to extend between two adjacent cellulosic members of the cellulosic layer into the concrete layer of the floor. The first portion includes attachment structure to attach the first portion to one of the two adjacent cellulosic members of the cellulosic layer to attach the anchor to the cellulosic layer. An upper edge margin of the first portion is disposed within the concrete layer when the first portion is attached to the cellulosic layer. A second portion extends from the upper edge margin in a first direction that is transverse to the first portion. The second portion is spaced apart from the cellulosic layer and embedded within the concrete layer of the floor to attach the anchor to the concrete layer.

Abstract: The disclosure relates to a multilayer panel for producing a floor covering, comprising a wear layer bonded to a back layer, said back layer being made up of at least a thermoplastic material, a plasticizer and fillers, the wear layer comprising a surface layer made up at least of PVC, said surface layer having a Shore D hardness greater than or equal to 60 and a Young's modulus greater than or equal to 1000 MPa.

Abstract: The present invention provides a pull bar and method for using the pull bar. The pull bar is used to pull together flooring boards that utilize a click-and-lock system. A handle is rigidly connected at an angle to a tapping block. A puller is rigidly connected to the underside of the tapping block. The puller has an angled lip that extends downward from the tapping block. A hook is connected to the angled lip and is for hooking a flooring board.

Abstract: A central rod passes through a form-board. A first disc is attached to a first end of the central rod. The first disc abuts to a first side the form-board. A second disc is attached to the central rod between the first end of the central rod and a second end of the central rod. The second disc abut to a second side of the form-board opposite the first side. A third disc, attached the second end of the central rod, is configured to receive a rebar rod.

Abstract: A wall brace system for providing an apparatus for supporting a wall in a building structure, which has been moved inward by pressure from the earth outside in order to return the wall to a desired position. The wall brace system has a structural member, a retainer, a mounting assembly, a load member, a jack, and/or a locking member. A jack and/or locking member are operatively coupled between the structural member and the mounting assembly. The jack functions to exert a force against the structural member, directly or through the load member, in order to force the structural member toward the wall for shifting the wall (e.g., outwardly). The locking member functions to lock the structural member in place with respect to the mounting assembly after the jack positions the structural member. Thereafter, the jack is removed from the mounting assembly.

Abstract: A molding removal tool assembly for prying molding off of a wall surface without damaging the molding or the wall surface. A pry bar is provided at its proximal end with a pry bar plate that extends at an angle from the pry bar and a striker shoe plate is secured with a hinge to the pry bar at and aligned with an edge of hinge securement of the pry bar plate to the pry bar. The striker shoe plate is provided with a cutout portion that receives the pry bar plate therein whereby the pry bar plate and striker plate are substantially flush with each other in a common plane when the pry bar plate is fully received in this cutout portion of the striker shoe plate. The striker shoe plate is provided with an exposed striker edge for receiving hammer blows in order to simultaneously wedge the flush striker shoe and pry bar plates between a wall surface and a molding attached to the wall surface. Once embedded, the pry bar is rotated to pry the molding away from the wall surface.

Abstract: The present invention relates to a design structure of an apartment house in which a plurality of apartment units, each of which is a maisonette in which two floors including an upper floor and a lower floor are combined into a single apartment unit, are repeatedly arranged in vertical and horizontal directions, wherein, in the design structure, each apartment unit has a living room disposed on the upper floor and a plurality of bedrooms disposed on the lower floor, double pillars spaced apart from each other are installed on side boundaries of adjacent apartment units, the double pillars include a pair of first pillars disposed inside an apartment unit and a pair of second pillars disposed outside the apartment unit and disposed inside another apartment unit adjacent thereto, a first beam member, which serves as a structure carrying a load, is connected to and installed at the first pillar, a second beam member, which serves as a structure carrying a load, is connected to and installed at the second pillar,

Abstract: A water heater includes a heat exchanger, a heat pump, a first valve in fluid communication with the heat exchanger and the heat pump, and a controller configured to control the first valve. The first valve can be configured to direct water flow toward at least one of the gas heater or the electric heat pump. A second valve in fluid communication with the first valve and the heat pump can be provided, and the controller can be further configured to control the second valve. A water heater inlet and a water heater outlet can be included and in fluid communication with the first valve, and the controller can be configured to monitor a temperature of water entering the water heater inlet and control the first valve dependent upon the monitored temperature.

Abstract: A vehicle connection system of a multi-story building, may include a building having a plurality of floors, provided with an elevator moving between the plurality of floors, and having at least one station provided inside or outside of the building so that the vehicle is configured to be docked to the at least a station; an elevator board provided at a bottom portion of the elevator to allow the vehicle to be loaded to the elevator or unloaded from the elevator and moving between floors of the building when the elevator is driven; a parking robot which is placed in a standby state on the elevator board, and when the vehicle enters the elevator board, allows the vehicle to be loaded on the elevator board and moved to a docking point; and a server communicatively connected to the building, the elevator board, and the parking robot, to manage statuses of the stations, and designate the docking point when the vehicle enters the elevator, and transmit the same to the elevator board and the parking robot.

Abstract: A scaffold apparatus may have a saddle with a platform and two spaced apart parallel sides extending above the platform. The apparatus may also have a beam having a beam flange attached to an end portion of the beam. The apparatus may also have an upright connector with a bottom portion, where bottom portion may have an insert, and a plate attached to the bottom portion.

Abstract: A storage container including a lid, a base coupled to the lid, an interior cavity defined by a closed state of the lid and the base, and locking mechanism disposed in at least one of the lid or the base. The locking mechanism includes a first key that is actuatable in a first direction and one or more second keys that are actuatable in a second direction that is transverse to the first direction. The one or more second keys are configured to engage with the first key and when the one or more second keys are actuated in the second direction, the first key is actuatable in the first direction to unlock the locking mechanism.

Abstract: A door locking apparatus is provided including a first plate, a second plate, a front assembly, a lock clip, and at least one control. The first plate includes at least one vertical slot. The lock clip is rotatably attached to the front assembly and includes at least one horizontal slot in a first end. The at least one control is mounted to the first plate and includes at least one protrusion. The at least one protrusion projects through the at least on vertical slot and through the at least one horizontal slot. The at least one control moves vertically between a first position and a second position. The lock clip is in an open position when the at least one control is in the first position and a locked position when the at least one control is in the second position.

Abstract: Receptacle locking devices are disclosed. A receptacle locking device having a contact arm and a pivoting feature can be pivoted from a first, unlocked position to a second, locked position, wherein the contact arm prevents opening of the receptacle door when the locking device is in the second, locked position.

Abstract: Embodiments described herein relate to an exit device having a construction that facilitates visual inspection of the state of the exit device. Embodiments of the exit device include a visual indicator as to the state (dogged or undogged) of the exit device.

Abstract: An earring security display hanger includes a body member, first and second arms, and first and second closure members connected to the body member via the first and second arms. Each of the first and second closure members has a top wall and a side wall extending between the top wall and an open end such that a recess is formed therebetween. A closure member aperture is defined on the top wall of each of the closure members, and a plurality of first closure apertures and a plurality of second closure apertures are defined on the sidewall of the first and second closure members, respectively. A plurality of first closure hooks and a plurality of second closure hooks are formed from the body member and are configured to engage with the plurality of first closure apertures and the plurality of second closure apertures, respectively, to provide a locking mechanism.

Abstract: Provided is a vehicle door latch device capable of shortening of energization time to an electrical drive source while a moving member is restrained by abutting against a stopper portion and improvement of durability of the electrical drive source. A control unit of the door latch device controls an electric motor for driving a sector gear in a release direction based on a door operation of an operation switch, and controls to stop a power supply to the electric motor when the latch is rotated from the full-latch position to the open position and a full-latch detecting switch is activated while the moving member is brought into abutment with the stopper portion and is stopped.

Abstract: A dual-shaft hinge module including a first shaft, a first driving gear disposed on the first shaft, a second shaft, a second driving gear disposed on the second shaft, a pair of driven gears coupled between the first driving gear and the second driving gear, and multiple links is provided. The links are respectively pivoted to any two engaged gears to keep a center distance of the engaged gears fixed. A relative distance of the first shaft and the second shaft is changed along with different engagement positions of the driven gears relative to the first driving gear and the second driving gear. A portable electronic device is also provided.

Abstract: A hinge, in particular a multi-joint hinge, has a mounting plate fixable on a body or a door and a side part, which is held on the mounting plate and on which a hinge part is pivotably mounted, wherein the side part is displaceable on the mounting plate in a longitudinal direction via a depth adjustment unit and the side part is pivotable in relation to the mounting plate by a vertical adjustment unit.

Abstract: A counterbalance assembly, including a housing, a pivot nose pivotably connected to the housing, and a spring pack disposed within a volume formed by the housing, the spring pack including a first end engaged with the housing, a second end engaged with the pivot nose, an energy storage device arranged between the first end and the second end, and a spring retainer operatively arranged to adjust a force of the energy storage device on the pivot nose.

Abstract: A sliding stop switch may include a first rod extending in the longitudinal direction thereof, a second rod coupled to the first rod such that one end portion thereof is slidable in the longitudinal direction of the first rod, and a switch member coupled to the first rod to slide in the longitudinal direction of the first rod and to be fixed at a plurality of points on the first rod to stop the sliding of one end portion of the second rod.

Abstract: A storage cabinet a cabinet body with a top opening, an upper cover, and two support elements is provided. Each of the two support elements is connected between the upper cover and the cabinet body. Each of the two support elements comprises a pneumatic bar, an upper cover connector, a cabinet body connector, and a swing piece. The upper cover connector is connected to a side of the upper cover, and the cabinet body connector is connected to a side of the cabinet body. A first end of the upper cover connector is pivotally connected to a first end of the cabinet body connector, and a first end of the swing piece is pivotally connected to the cabinet body connector. Two ends of the pneumatic bar are respectively connected to a second end of the swing piece and a second end of the upper cover connector.

Abstract: An opening and closing device includes an upper arm and a lower arm spaced apart in an up-and-down direction and extend between a vehicle door and a vehicle body, a connecting member configured to connect a first end portion of the upper arm and a first end portion of the lower arm, a body-side upper hinge and a body-side lower hinge attached to the vehicle body so as to be spaced apart in the up-and-down direction and support the connecting member rotatably, a door-side upper hinge attached to an inner panel of the vehicle door to support a second end portion of the upper arm rotatably, and a door-side lower hinge attached to the inner panel of the vehicle door to support a second end portion of the lower arm rotatably.

Abstract: A spindle drive assembly for opening and/or closing a vehicle flap is described, having a spindle extending along a spindle drive axis and a spindle drive motor which is drivingly coupled to the spindle via a gearing and the motor shaft of which is arranged substantially coaxially with the spindle drive axis, wherein a coupling compensating an axial offset and a hysteresis brake are drivingly interposed between the spindle drive motor and the gearing. In addition, a vehicle flap with such a spindle drive assembly is presented.

Abstract: An exemplary method relates to operating a door closer assembly including a closer body, a pinion rotatably mounted to the closer body, a motor including a motor shaft, and a bidirectional clutch connected between the pinion and the motor shaft. The method generally involves permitting, by the clutch, rotation of the pinion in each of a first direction and a second direction without transmitting rotation of the pinion in either direction to the motor shaft; sensing, with a sensor, a rotational position of the pinion; comparing, by a controller, the rotational position of the pinion with a desired rotational position; based upon the comparing, driving the motor to rotate the motor shaft; and by the clutch, coupling the motor shaft with the pinion in response to rotation of the motor shaft, thereby transmitting torque from the motor shaft to the pinion and urging the pinion toward the desired rotational position.

Abstract: An open-close body controller includes a motor, movement interference determination unit, and disturbance determination unit. Motor is configured to open and close an open-close body of vehicle. Movement interference determination unit is configured to detect whether characteristic value of motor, which is varied in accordance with change in load applied to open-close body when moving, is in movement interference range or non-movement interference range bordering threshold value and determine that movement of open-close body has been interfered with by foreign object when characteristic value is in movement interference range. Disturbance determination unit is configured to determine whether motor is subject to effect of disturbance.

Abstract: Features for systems and methods of providing a sill pan for door systems are described. More specifically, features for systems and methods for flashing and sealing around exterior door systems such as pocket doors, stacking doors, French doors, and traditional sliding doors.

Abstract: A profile for window, door, facade or cladding elements is disclosed, which comprises a profile body (2) made from thermoplastic material and extending in a longitudinal direction (z) with an essentially constant cross-section (x-y) along the longitudinal direction (z) and having at least one outer surface (2a), and a inorganic containing layer (4) deposited on at least part of the at least one outer surface (2a), wherein the thermoplastic material comprises at least one thermoplastic selected from the group containing polyamide, polyethylene, polybutylene terephthalate, acrylonitrile styrene acrylate, wherein the inorganic containing layer (4) is deposited directly on the profile body (2) using a cold spray technology, and wherein the inorganic containing layer (4) has a thickness in the range from 30 ?m to 450 ?m.

Abstract: A ventilated window frame comprising; a frame having a plurality of slots along an interior edge and a channel having a first opening and a second opening, a permeable layer fitted within one of the plurality of slots distal to the first edge of the frame, a permeable layer secured within one of the plurality of slots distal to the second edge of the frame, a non-permeable layer secured within one of the plurality of slots between the first and second permeable layers, wherein the first opening of the channel is between the first permeable layer and the non-permeable layer and the second opening of the channel is located between the second permeable layer and the non-permeable layer, a filter inserted within the first opening of the channel, and a fan fitted between the first opening and the second opening of the channel.

Abstract: An apparatus for adjusting a tilt angle of a plurality of slats in a window blind. The window blind includes a headrail having disposed therein a shaft that rotates responsive to rotation of an externally accessible angle adjustment wand. The apparatus includes a pulley coupled with the shaft and the slats. The pulley causes adjustment of the tilt angle of the slats in response to rotation of the shaft, provides a first torque at a first position corresponding to an open position of the slats and a second torque at a second position corresponding to an approximately closed position of the slats, where the second torque is greater than the first torque.

Abstract: A blind having a blind operating mechanism and an endless loop blind control element for operating the blind mechanism, comprising: an enclosure extending from an upper end to a lower end, with the endless loop blind control element enclosed within the enclosure between the upper end to the lower end of said enclosure, when in a first position; a connector supporting the upper end of the enclosure adjacent to the blind operating mechanism and depending downwardly from it; and the lower end of said enclosure moveable from said first position towards that upper end to a second position so as to permit operation of said endless loop blind control element. The invention also relates to a lower housing displaceable towards the enclosure.

Abstract: A roller-shutter door system comprises a pair of opposed substantially parallel guide rails and a door formed by longitudinally hinged door slats coupled to a retraction roller. The door can be opened and closed with rotation of the retraction roller, and longitudinal ends of the door slats ride within door guide channels in the guide rails. Exterior side seals may cover a gap between the door slats and the door guide channels, and wear shields may be interposed between coated exterior surfaces of the door slats and the side seals so that the side seals bear on the wear shields instead of the coated exterior surfaces. The guide rails may have equipment channels on interior sides thereof, and radius guides may be releasably received in open superior ends of the equipment channels. The radius guides have outwardly facing guide surfaces to guide the door slats toward the retraction roller.