Abstract: An elongated grid runner, and its manufacture, comprising a pair of overlying metal strips roll-formed together into a shape suitable for use in a rectangular grid to support ceiling panels, one of said strips serving as a visible cap for concealing the other strip forming the main body of the grid runner when the grid member is employed in a completed ceiling, the strips being lanced at each end of the grid runner to lock the cap strip on the main body strip whereby when the overlying strips are simultaneously cut to a finish length prior to finish roll-forming, the ends of the strip are maintained in substantially overlying end-to-end registration where the cap is visible in a finished ceiling.

Abstract: A panel for a drop ceiling is made of a semi-rigid but resilient material such as spring steel and includes corner clips adapted to cooperate with the inverted T-shaped stringers of a drop ceiling support system so that the panel is self-centering between opposing stringers and is spring biased into a clamped relationship with horizontal flanges of the inverted T-shape stringers to prevent the panel from moving up and down. The corner clips are also designed to transfer any horizontal compressive shear force in the mounting system to vertical edges of the panel so as not to undesirably bow the flat base of the panel.

Abstract: Such a substructure has vertically and horizontally running profiles which are fastened on a masonrywork wall, cross over one another and have holes. So that there is no need for dimensionally accurate installation, or for holes to be drilled into the profiles at the building site, in order to avoid displacement of a profile when the connection between the profiles is being loosened, both the vertically and the horizontally running profiles have slots, wherein the slots of the vertically running profile cross over the slots of the horizontally running profile, and at least one of the profiles has a channel-like cross section, it being possible for a plate which has a slot to be inserted into the channel, and fixed, at the crossover point of the profiles, the slot of said plate crossing over the slots of the vertically and of the horizontally running profiles and it being possible for the plate to be locked to the profiles by means of a locking component which passes through the crossing-over slots.

Abstract: A paneling system for external building walls includes: panels; bottom and top panel adapters attached to the panels with anchor plates; sill, head and wall girts; top and bottom panel shelves; and panel alignment mechanisms. The top panel shelves are configured for complimentary engagement with the top panel adapter and with the head and wall girts; and the bottom panel shelves are configured for complimentary engagement with the bottom panel adapters and with the sill and wall girts. A method for installing the paneling system includes attaching the sill, head wall girts to the wall; attaching the top and bottom panel shelves to the corresponding head girt, sill girt or wall girt; attaching the top and bottom panel adapters to each panel; attaching top panel adapters to the top panel shelves; attaching the bottom panel adapters to the bottom panel shelves; and aligning the panel using the adjustment mechanism.

Abstract: A modular architectural system adapted for use with a finished wall in a patient room includes a service unit, a wall-masking panel, and an interface strip. The service unit includes a frame and a plurality of modular panels coupled to the frame to support service outlets relative to the finished wall. The wall-masking panel is spaced apart from the service unit and is arranged along an edge of the service unit. The interface strip is coupled to the service unit and arranged along the edge of the service unit between the service unit and the wall-masking panel to interconnect the service unit and the wall-masking panel.

Abstract: Producing grid tees with a range of service duty, reflected in the use of various gauge sheet stock, that exhibit an effective uniform thickness at their cross tee slots by locally altering a grid tee in the area of its cross tee receiving slot or slots so that the grid tee has a uniform effective thickness at these area(s) that can be standardized across a manufacturer's range of tee load ratings. Preferably, a grid tee is permanently stamped with an indentation or dimple adjacent the cross tee slot and a cross tee connector has a lead edge area arranged to seat against the bottom of the indentation.

Abstract: A ceiling tile suspension system comprising a clip member, a suspension track releasably securable to the clip member and a ceiling tile suspension rail releasably securable to the suspension track. The clip member is securable to a structural component of a ceiling and has an upper surface and a pair of downwardly depending sides. The suspension track is releasably securable to the clip member and has a pair of upwardly extending legs. At least the sides of the clip member or the legs of the suspension track are horizontally resiliently displaceable to releasably secure the suspension track to the clip member.

Abstract: A modular system for a façade structure for a building comprising panels and panel retaining elements for mounting the panels to the building and method for producing said facade.

Abstract: A wall brace support for an acoustical ceiling tee having a bulb includes an elongated main portion having two ends; a wall attachment tab at one of the ends, the tab being operable to abut the wall and receive at least one fastener therethrough to fasten the tab to the wall; and an acoustical ceiling tee attachment structure at the other end, the structure being operable to receive at least one fastener therethrough to fasten the structure to the bulb at a location spaced away from the wall.

Abstract: A suspension device that suspends, from a ceiling slab, a beam member including a groove portion which extends along an axial center direction thereof and includes an opening portion narrower than an inner space of the groove portion in a cross-section orthogonal to the axial center direction, the suspension device including: a first suspension member including: a first shaft portion; a first connection portion; and a first supporting portion which supports the beam member; and a second suspension member attachable to and detachable from the first suspension member, the second suspension member including: a second shaft portion which supports the beam member.

Abstract: Ball pivot assemblies for mounting panels to a cable regardless of panel geometry or orientation include a ball pivot. The ball pivot includes geometry configured to enable a panel to pivot about the ball pivot in a plurality of orientations in a plurality of planes with respect to the cable. One or more implementations of the present invention can include a ball socket configured to receive the ball pivot, and provide a secure interface between the ball pivot assembly and the panel. Also, systems of at least one implementation of the present invention include a plurality of panels mounted to one or more cables using one or more ball pivot assemblies. In addition, one or more implementations of the present invention include methods of mounting panels using one or more ball pivot assemblies.

Abstract: A suspended ceiling grid runner comprising separate parallel upper and lower chords, a plurality of identical web plates fixed between the chords and the plates having a height less than the height of the grid runner and a width, the chords being made of roll-formed sheet metal strips and symmetrical about a vertical plane, the chordal strips each having marginal sections folded parallel to one another and on opposite sides of the vertical plane, the web plates including vertical slots for receiving connectors of cross runners, the web plates being spaced at regular centers along the grid runner with a distance that is a small fraction of the nominal length of the grid runner, the gaps between adjacent web plates being longer than the height of the grid runner.

Abstract: The invention provides a bracket and method of its use for adapting standard wall angle trim for use in sloped ceiling construction. The disclosed bracket arrangement can be used for the top edge or bottom edge of a sloped ceiling and be adjusted to match the angle of any practical ceiling slope. In disclosed embodiments, the bracket has the form of a rectangular flat steel sheet. The sheet has a hinge or bend line running lengthwise in its mid-area. The bend line is made by cutting the sheet intermittently along its length and thereby dividing the sheet into two sections. The cuts may be made, for example, by punching elongated slots along the bend line in a blank being formed into the bracket. Also punched into the bracket blank are a plurality of holes distributed lengthwise on marginal areas of the two sections of the blank.

Abstract: Suspended ceiling grid runners include a flange extending laterally to both sides, the flange forming a three dimensional face including sides visible from below a plane of the grid, opposed cross runners intersecting through runners with their ends joined by mutually interlocking end connectors extending through a slot in the through runner, the cross runner ends including end edges configured to abut a respective side of the flange of the through runner, a connector when connected to an opposite connector causes the associated end edges to resiliently locally deflect the abutted flange side to substantially eliminate any gap therebetween.

Abstract: An elongated grid runner, and its manufacture, comprising a pair of overlying metal strips roll-formed together into a shape suitable for use in a rectangular grid to support ceiling panels, one of said strips serving as a visible cap for concealing the other strip forming the main body of the grid runner when the grid member is employed in a completed ceiling, the strips being lanced at each end of the grid runner to lock the cap strip on the main body strip whereby when the overlying strips are simultaneously cut to a finish length prior to finish roll-forming, the ends of the strip are maintained in substantially overlying end-to-end registration where the cap is visible in a finished ceiling.

Abstract: A ceiling system for buildings that has, among other things, a first molding having a first molding slot, a second molding having a second molding slot, and a third molding having a third molding slot. The system further includes a molding clip having a support member portion for positioning on a support member and a first molding slot attachment for positioning in the first molding slot. A molding bracket has a first molding surface for positioning on the first molding and a second molding slot projection for positioning in the second molding slot. A rail clip has a rail end for positioning on a side rail and a slot end for positioning in the third molding slot. The system has a panel for positioning adjacent to the first, second and third moldings.

Abstract: A runner, a suspended ceiling system, and a method of installing a suspended ceiling, the runner having a base with two laterally opposite flanges for supporting ceiling tiles, a hinged web connected to the base between the flanges so as to be foldable between a flat configuration with the web folded against one of the flanges and an inverted-T configuration with the web normal to the base for suspension and use, the hinged web allowing for economies is shipping when compared to conventional rigid inversed-T shaped runners.

Abstract: Structure (1) for mounting, on a building wall, at least one frame (50) consisting of a rectangular framework (51), comprising a carcass (2) made of at least two uprights (3) and at least two crossbars (4) assembled so as to form at least one rectangular underframe (15) adapted for receiving a frame (50), and means for fixing at least one frame on the carcass, each upright (3) having a central core (31) bordered by two side wings (32, 33) comprising recesses (38, 39) for receiving the crossbars (4). Each crossbar (4) has a central core (40) and side wings (41, 42) comprising recesses in line with the uprights (3) at the intersections between the crossbars (4) and the uprights (3) in such a way that the wings of the uprights (3) and the crossbars (4), extending on the inner periphery of the rectangular underframe (15), form a projecting border on which a frame (5) may be fitted. Wall provided with a structure of this type on which panel-holding frames are mounted.

Abstract: The fan filter mounting frame is useful in installation of equipment in a cell of suspension grid systems when the equipment is passed through and is placed in a corner of the cell. The equipment is supported partially directly by the grid and partially indirectly by the grid through an adapting frame insert. The frame insert is connected between the equipment and the suspension grid system and may have two legs that meet at an apex, a first leg extending along a first grid rail and a second leg extending along an adjacent second grid rail. Each of the two legs also extends between its respective rail and the equipment, supporting the equipment on the respective suspension grid rails. Thus, the grid system may be in its design position or condition prior to and during placement and replacement of the equipment without disruption.

Abstract: A wall panel system includes at least one wall panel, each edge of the panel having a flange. At least one flange, and preferably two opposing flanges, have at least one slot therein. Each slot is mated with a clip having two extensions laterally spaced from one another, one of said extensions having a latch member protruding in a direction toward the other of said extensions, such that the clip is secured to the flange by virtue of the latch member mating with the slot. The clip may then be attached to a building surface or intermediary mounting apparatus by a fastener to secure the wall panel thereto.

Abstract: An up-tight surface covering system for attaching a facing of a panel member to a support structure comprises an adjustable hanger bracket for attaching a grid member to the support structure and a clip for attaching the panel member to the grid member. The adjustable hanger bracket comprises an arm rotatably attached to a support. The arm includes a first section extending substantially parallel to the support and a second section extending substantially perpendicular to the support. The second section has at least one slot for receiving a mechanical fixing member. The clip comprises a main body portion having an attachment member extending from a substantial center thereof. The main body portion has engagement members extending from opposing sides of the main body portion and substantially perpendicular thereto. The engaging members have abutment members extending from side surfaces thereof substantially perpendicular to the main body portion and the engaging members.

Abstract: In a panel suspended ceiling for seismic prone areas, a superstructure extends from and above the ceiling grid. The superstructure is engaged within a lateral support bar that slidably supports the superstructure, and ceiling, during a seismic event.

Abstract: A panel system incorporating a plurality of side by side panels which are joined to one another with tongue and slot connectors. The connectors are configured to permit each panel to be attached to an underlying surface through the connector before a subsequent panel is attached to it.

Abstract: Embodiments of the invention generally provide a containment system having integrated bubble tight-dampers. In another embodiment, the containment system includes an integral auto-scan mechanism disposed in the housing of the containment system so that a filter element, disposed in the housing, may be leak tested without accessing the interior of the housing. In yet another embodiment, a method for testing a filter disposed in a containment system includes challenging an upstream side of a filter element disposed in a housing of the containment system with a test aerosol, and automatically moving a probe disposed within the housing to obtain samples for leak testing.

Abstract: A wall panel system includes at least one wall panel, each edge of the panel having a flange. At least one flange, and preferably two opposing flanges, have at least one slot therein. Each slot is mated with a clip having a unique shape that allows the clip to be inserted into the slot and secured therein without the use of fasteners and strictly due to its shape. The clip may then be attached to a building surface or intermediary mounting apparatus by a fastener to secure the wall panel thereto.

Abstract: A decorative panel for installation on a ceiling or wall as part of a grid of panels. Each of the panels includes a formed sheet of thin sheet metal or plastic material having a main decorative portion and side edges forming a perimeter of the panel. Each side edge includes a flange offset from and extending outwardly from the main decorative portion and a groove positioned between the decorative portion and the flange. Each flange in the grid capable of overlapping the next adjacent flange and to receive a fastener through both overlapping flanges to secure the panels against the ceiling or wall. Adjacent side edges define a gap therebetween into which a resilient concealment strip having flexible sides is resiliently securable into the gap to conceal the fasteners.

Abstract: A seismic separation joint is provided for connecting end-to-end a first grid tee to a second grid tee. Each grid tee includes a central web, with a tongue or tab extending from the web. Preferably, an elongated slot extends from the web into the tongue/tab associated therewith, with the slots being aligned when the first grid tee is connected to the second grid tee. A fastener is received in a portion of the tongue/tab of at least one, and preferably both, of the grid tees distally of the slot in one grid tee and in the slot of the other grid tee.

Abstract: A soffit system is disclosed and has elongate first and second soffit components. Each soffit component includes a support flange and a sidewall integrally connected to one another along a lengthwise joint. A connector is carried on each of the sidewalls. A connector leg is carried on each of the sidewalls that is spaced from and parallel to the second joint. The connector and the connector leg extend in a lengthwise direction. Each sidewall is oriented at a non-parallel angle relative to each support flange, respectively. The first connector and the second connector are pushed toward one another to selectively join the first and second soffit components, and are pulled apart to separate the first and second soffit components.

Abstract: The present invention relates to a method for lining an in particular flat surface with a flexible covering material, particularly textile material, in which the surface is lined with one or more flexible covering material pieces and in which the material piece or pieces are stretched. The method is inventively characterized in that for stretching a material piece at least one stretching rail with a holding side and an assembly side is used, that the stretching rail is brought into pivotable engagement on the holding side with a holding rail provided on the flat side, that a first side of the material piece is brought into tensile loadable engagement with the assembly side of the stretching rail, that second side of the material piece is directly or indirectly connected to the flat surface and that the stretching rail is pivoted for stretching the flexible covering material and fixed in a stretching position. The invention also relates to a lining for an in particular flat surface.

Abstract: A suspended ceiling system uses a grid system having series of intermediate nodes interior to a peripheral edge of the ceiling system and a series of edge nodes at an edge of the grid system. Each intermediate node is defined by a connection plate having a series of guide tracks for receiving and cooperating with an upper edge of the ceiling grid members to align the grid members in a predetermined geometric configuration. Mechanical fasteners secure the connection plate and the ceiling grid members in any of the guide tracks. Each connection plate between adjacent guide tracks includes generally opposed connection slots for receiving support springs suspending ceiling panels beneath the grid system. The connection plate simplifies installation and avoids incorrect placement of the grid members. Preferably the grid system includes at least five grid members equally spaced about a center point of the connection plate.

Abstract: A seismic bracket for supporting ends of suspended ceiling grid runners from a wall comprising a stamped sheet metal body, the body having a horizontally extending portion and a vertically extending portion, the vertically extending portion, in its installed position, rising above the top of a standard grid runner a distance at least 1½ times the height of such standard grid runner, the vertically extending portion having two sections generally coextensive in the vertical direction, a first section being integral with the horizontally extending portion and a second section arranged to be in a vertical plane that intersects a vertical plane occupied by the horizontally extending portion, the horizontally extending portion being arranged to support a grid runner to move longitudinally a limited distance, the second section of the vertically extending portion having an aperture for securing the bracket to the wall at a location substantially above the grid tee.

Abstract: A suspended ceiling system comprising metal grid members and rectangular composite acoustical panels, the panels having edges at their peripheries, the grid members having a cross section generally like an inverted T such that they provide oppositely extending flanges adapted to support the panels at their edges, a resilient element at a juncture between a support on the grid member flanges and at least one edge of each panel, the resilient element being arranged to temporarily deflect to permit a panel to be raised from below the grid member into an installed position and to extend itself to hold such panel in position on the grid.

Abstract: A wall panel system including a mounting bracket, a wall panel, and a clip attached to the wall panel, the clip having an engaging element that secures it to the mounting bracket. The wall panel system also includes a slot in the clip facing outwardly from the wall panel, a spline slidably positioned in the slot of the clip, and a sealing insert positioned between the mounting bracket and the spline. The sealing insert may be in the shape of an X, and may be made from polypropylene foam. The sealing insert may also have a gasket tape on one side to provide an improved seal.

Abstract: A suspended ceiling system uses a grid system having series of intermediate nodes interior to a peripheral edge of the ceiling system and a series of edge nodes at an edge of the grid system. Each intermediate node is defined by a connection plate having a series of guide tracks for receiving and cooperating with an upper edge of the ceiling grid members to align the grid members in a predetermined geometric configuration. Mechanical fasteners secure the connection plate and the ceiling grid members in any of the guide tracks. Each connection plate between adjacent guide tracks includes generally opposed connection slots for receiving support springs suspending ceiling panels beneath the grid system. The connection plate simplifies installation and avoids incorrect placement of the grid members. Preferably the grid system includes at least five grid members equally spaced about a center point of the connection plate.

Abstract: A hanging display system is provided comprising an electrified grid system adapted for operative communication with display animation modules.

Abstract: A grid system is provided that is particularly suited for the suspended ceiling system that varies in the vertical plane. An elongated carrier tube is provided the spans substantially the width of the grid system that has a slot therein adapted to receive the strengthening bulb of a main runner. A clip is provided that seats on the carrier tube that has opposed faces for capturing the bulb of the runner, so as to secure the runner to the tube carrier.

Abstract: A ceiling with stabilizing frame 1 comprises a frame, a plurality of ceiling plates, and a plurality of fastening devices, Each of the fastening devices is placed at an inner side of one of the side plates of one of the ceiling plates and has a threaded hole, The frame has a plurality of mounting bars, which are connected with cover plates of the ceiling plates on upper sides thereof by holding screws, which are respectively engaged with the threaded holes of the fastening devices, Thereby load on the ceiling plates is spatially distributed, so that an increased maximum load and an enhanced lifetime of the ceiling is achieved.

Abstract: A device for suspending equipment such as a lighting fixture or public address speaker from a ceiling mounted track (5) used to suspend a movable partition and including an extruded rail (4) defining a channel having a longitudinal slot opening (8) between flanges (9) projecting inwardly from opposite lateral walls(6) of the rail. The device comprises a threaded stem (13) capped by an enlarged head (14) passes through the slot opening (8) and is engaged by a lug (17) which cooperates with the head to forcibly bear against or capture one or more of the flanges. In an alternate embodiment of the invention the axial movement of the lug along the stem and the rotational movement of the head in reference to the slot are accurately limited for ease of alignment. The device can be quickly loosened to allow horizontal adjustment of the suspended structure along the rail.

Abstract: According to the present invention there is provided a system of panels which could for instance be used for a suspended ceiling comprising one or more rows (R1, R2, . . . ) of panels (2), where one or more of the panels (2) of a given row can be moved from a first, upper level (a), where the panels are fixed relative to the system to a second, lower level (b), where the panels can be displaced along and underneath panels situated at the first level, thereby providing access through the system of panels to the space above or behind the panels. According to the invention there is furthermore provided panels for such systems, the panels comprising a substantially rigid frame (6, 12), the frame being furthermore provided with means for cooperation with mating means on a suspension and guide system, thereby allowing said movement from one level to the other and vice versa and said displacement.

Abstract: A wall or ceiling panel secures a grid insert, preferably of an architectural metal mesh, within a frame using a series of spring clips. The spring clips engage the metal mesh and are retained in a securing slot provided at an interior edge of the panel frame. Each spring clip includes at least one engagement member that passes through and engages the grid insert. The spring also includes a securing base that is received and retained within the securing slot of the frame. The panel can also include a securing arrangement for supporting the grid member at a position spaced from the frame to avoid downward bowing of the metal mesh.

Abstract: A wall surfacing system for providing a secondary ceiling or wall covering structure adjacent a primary structure. The system provides a plurality of elongated structural support rails, each of these support rails have a coupling web with a bearing surface for attachment to the primary structure, a coupling mechanism, and a stringer portion integrally formed with and connecting the coupling web to the coupling mechanism. A plurality of generally planar surface panels are provided. Each panel has an integral interlocking member configured to mate with the coupling mechanism on the support rail. The elongated support rails are secured to primary structures, thereby extending the surface panels to form an aesthetically pleasing covered surface.

Abstract: A ceiling panel is provided for use in a grid-type suspended ceiling, wherein the grid includes a plurality of spaced grid runners. The ceiling panel comprises a tile base with perimeter segments and perimeter profiles along at least a portion of at least two of the perimeter segments. Each profile is supportable by the grid runners during suspension. A facing material is secured across the perimeter segments, and extends beyond the perimeter profiles in order to at least partially conceal two of the grid runners when the tile is suspended from the two grid runners and viewed from below.

Abstract: Building façade attachable to a building. The building façade includes at least two horizontally adjacent façade panels. Each respective façade panel including horizontal top and bottom edges and two vertical side edges. At least one recess is arranged on a surface of each respective façade panel directed towards the building. The at least one recess is arranged parallel to the two vertical side edges. At least one groove is arranged on the horizontal bottom edge of each respective façade panel. A mounting construction has at least one attachment element extending into the at least one groove of each respective façade panel and at least one guiding projection extending into the at least one vertical recess of each respective façade panel. The at least two horizontally adjacent façade panels are aligned approximately parallel to one another.

Abstract: The invention pertains to a lightweight board with two thin-walled top layers and at least one core layer located between the top layers and connected to these, and a process to manufacture this. The process to manufacture the invented lightweight board is characterised by a first process stage in which a groove is made in at least one longitudinal side of the lightweight board, a profile strip is inserted in a second process stage into the groove in the lightweight board and a further profile strip is attached in a third stage on the previously attached profile strip.

Abstract: A device for providing structural support comprising a longitudinal slot formed with inwardly projecting longitudinal flanges, and a support member extending outwardly opposite the longitudinal slot. Some embodiments may include a support member having a stop formed longitudinally along the edge of the support member. Other embodiments may include a plurality of longitudinal protuberances and/or detents. In addition, holes may be disposed in the support member and the support member may be formed with decorative elements to effectuate a particular design.

Abstract: A clip for attaching the end of a grid tee to a wall angle. The clip, in various forms, is arranged to frictionally lock between the hem of the horizontal leg of the wall angle and the vertical leg. The clip, typically, has a pair of opposed open hems forming channels in which the flange of the tee end is received to join the tee to the clip. The clip can be elongated horizontally to accommodate movement of the grid during seismic activity. The clip can be used to trim the edges of a ceiling island and can be made to accommodate angular intersections of the grid with a wall or island edge.

Abstract: An attachment device useful with suspended ceiling systems is provided. In disclosed embodiments, the device comprises a clip that matingly engages a bulb of a ceiling grid tee. The device may include a reinforcing sleeve and can be used to increase the load carrying capacity of suspended ceiling systems while providing a simple, quick method of attaching the suspended ceiling grid to the true ceiling.

Abstract: The invention relates to a plane structure, such as a wall, floor, ceiling or roof, comprising profiles (3A) extending mutually parallel in a first direction, elements (1) which can be coupled releasably to the profiles, wherein a profile extends on both sides of an element and wherein the elements are coupled to both adjacent profiles. The invention also relate to the elements and profiles for use in this structure, as well as to the method for building such a structure. An automatic positioning of the elements is created as a result of these measures; this then no longer depends on the skill of the builder. Owing to the releasability of the coupling the elements can simply be stacked on the profiles.

Abstract: The invention comprises a completely recessed wall-wash lighting fixture capable of being installed within a ceiling. The lighting fixture comprises a housing, which contains a lamp. The invention may comprise a lighting fixture further comprises a reflector disposed within the housing and adjacent to the first end of the housing. The invention may also comprise a flared lamp shield attached to the housing, which is capable of protecting the lighting fixture from damage. The lamp shield extends below the ceiling when the lighting fixture is installed.

Abstract: A flexible ceiling panel is preferably formed from sheet metal, such as aluminum sheet. Each ceiling panel has a generally rectangular shape (corresponding in width to the spacing between the main runners) and is formed with a hem on all four edges. A series of bendable tabs are formed integrally with the hem of the panel. To secure the panel to the associated grid system, the tabs are folded upwardly and outwardly from the panel along two axes to secure the panel to the grid system. Alternatively, a plurality of separate spring clips is used to secure the panel to the grid system. Each clip includes a first leg adapted to have at least a portion thereof received in the hem of the ceiling panel. A second leg extends generally perpendicularly from the first leg and includes a detent extending toward the first leg, the detent being adapted to secure the clip to the flange of the runner.