Abstract: A housing assembly for mounting to a wall of a building is disclosed. The housing assembly includes a front plate attached to a back plate. The back plate defines an axis and has a flange extending radially away from the axis for coupling to the wall. An insert is disposed between the front plate and the back plate. The insert includes a central body having a fluid diverter extending outwardly from the central body for guiding a fluid away from the wall. The housing assembly further includes a locking device for selectively coupling and uncoupling the insert from one of the front plate and the back plate.

Abstract: A vent for a tile roof is disclosed. The vent includes a first member preferably substantially formed of a metal, a second member preferably substantially formed of a plastic material, and a connector attached to the underside of the second member. The second member is positioned below and spaced apart from the first member. The first and second members together define a ventilation gap therebetween. The first member and second member are preferably releasably connected to each other. The connector is configured to connect with an air conduit. The connector is further configured to be compatible with a plurality of sizes and types of air conduits. The ventilating access and the connector are together configured to permit airflow between above the roof and the air conduit.

Abstract: Apparatus for recovering thermal energy escaping through a wall structure. The apparatus comprising a wall structure (2) provided with a thermal energy recovery layer, the thermal energy recovery layer having an arrangement of one or more air breathable sections provided adjacent one or more non-air breathable sections. Rising or falling air (3) at an outer surface of the wall structure (2) passes over the one or more non-air breathable sections to collect escaping hot or cold thermal energy before passing through the one or more breathable sections to thereby be recovered. Further provided is an air collection means (4) for collecting warmed air rising up or cold air flowing down an external wall of said building. The air collection means comprising a tapering converging guide member extending outwardly from the building's wall (2) for collecting and directing rising or falling air into the building.

Abstract: A baffle vent is formed to span several roof rafters in a panel form with alternating flat ribs and rounded valleys extending along the longitudinal length thereof. The spacing of the flat ribs is four inches on center so that the transverse width of the panel will be engaged properly with roof rafters spaced on a multiple of four inches. The baffle vent includes uniformly spaced transverse ribs that extend from one transverse edge of the panel to the other to stiffen the panel which is formed of vacuum molded polyvinyl chloride film. The baffle panel is placed on top of the roof rafters before the roof sheeting is applied so that the insulation will force the baffle vent against the roof where the flat ribs engage the roof sheeting and the rounded valleys provide a passage for air to flow from the building soffit to the roof vent.

Abstract: An insulation block is utilized with a corresponding baffle vent having a transverse width that will span several roof rafters, as is provided for use with manufactured housing. The insulation block includes uniformly spaced vertical ribs that extend from one edge of the insulation block to the opposing edge thereof to stiffen the insulation block which is formed of vacuum molded polyvinyl chloride film. After the baffle panel is placed on top of the roof rafters, which is before the roof sheeting is applied, the insulation block is attached to the wall top plate with the top edge of the insulation block placed into engagement with the baffle vent. The top edge of the insulation block is configured to mate with the undulating configuration of the corresponding baffle vent, fitting between transversely extending stiffening ribs on the baffle vent, to prevent insulation from entering the soffit area.

Abstract: An energy conserving active thermal insulation arrangement installed upon the ambient surface of an insulated structure employing alternately spaced insulated air channels and insulated conductive ply channels. A thin conductive ply conveys the energy by conduction from the airflow into the adjacent conductive ply channels, that contain an additional layer of foam which improves the conservation of energy. The conductive ply is placed above and below structural openings which would otherwise restrict airflow. The airflow is drawn from beneath the frost line, exhaust ventilation or sunspace. A math model solution determines the energy necessary to maintain a desired room temperature for each hour of the day which characterizes the thermal resistance. As the ambient temperature fluctuates, the resistance varies, however the energy for 24 hours is used to determine the total apparent resistance. Examples of apparent resistance R-value have been improved beyond any published resistance values to date.

Abstract: A customizable ridge ventilator includes a first support bracket, a second support bracket, a perforated support and a ridge cover. The first and second support brackets are attached to a roof. The perforated support is secured to the first and second support brackets. The ridge cover is attached to the first support, the second support and the perforated support. A second embodiment includes a support bracket, a perforated support and a ridge cover. The support bracket is attached to a roof. The perforated support is attached to the support bracket and a back side of wall. The ridge cover is secured to the perforated support. A third embodiment includes a support bracket, a perforated support and a ridge cover. The support bracket is attached to a roof. The perforated support is attached to the support bracket. The ridge cover is attached to the perforated support bracket and a wall.

Abstract: The present invention generally encompasses a ridge cap roofing product that is formed from a composite material. The ridge cap has a cross section that is generally in the shape of an inverted V with a rounded apex and includes a front section and a back section. The front section has a straight lower edge. The back section has a lowered edge that tapers both upward and inward. The tapered shape of the ridge cap's back section insures that installed ridge caps lie flat and that a covered ridge or hip does not have a saw tooth appearance. The ridge cap of the present invention is somewhat flexible so that it can be used with roofs that have a range of pitches. In one embodiment, the top surface of the ridge cap's front section is textured or contoured so that it simulates certain conventional shingles.

Abstract: An insulation system of a building having a plurality of spaced-apart support members has an insulator with a plurality of ribs are formed thereon. A concave portion of each rib receives one of the support members. A panel covers, and is secured to the support members. An exterior covering element is secured to an exterior side of the panel. A radiant heat barrier is bonded between the insulator and the panel. The insulator defines air ventilation channels between the foam insulator and the panel for venting air from building. An insulator assembly for a building has a sheet of foam insulation with a plurality of channels intermittently formed in the sheet of insulation. Each channel has a concave side and a convex side. The concave side is adapted to receive a support member of the building. A radiant heat barrier is bonded to a surface of the foam insulation.

Abstract: The invention concerns an energy-saving baffle. In this regard, the invention may include a baffle of synthetic material that may have insulating properties and a shape and a size to be positioned beneath the roof and attached to framing members that connect a top plate of a wall with an apex of a roof. The baffle may be positioned in proximity of the top plate, wherein the insulating properties and positioning of the synthetic block provide an increase of insulation R-value at or above a predetermined threshold in the area beneath the roof.

Abstract: A pipe boot includes a plurality of co-axial hollow cylindrical sections joined by an annular shoulder between successive sections. A first annular bead and a second annular bead surround each tubular section with the first annular bead positioned radially outward of each annular shoulder. The second annular bead is spaced a short distance from the second annular bead leaving an annular trough between them.

Abstract: A roof ridge vent comprises a one-piece, elongate body rollable into a spiral roll. The vent body has an elongate upper wall with a pair of longitudinally-extending side edges, an underside, and a plurality of bracing walls depending therefrom. The vent body further includes a pair of grillwork walls with ventilation openings extending downwardly and outwardly from the side edges of the upper wall. Still further, the vent body includes a pair of longitudinally-extending sidewalls that project from the outer edges of each of the grillwork walls and that are disposed upright with respect to the upper wall. Each of the sidewalls has a continuous, longitudinally-extending top strip and a spaced apart pair of longitudinally-extending walls depending from the top strip. The pair of walls includes a series of drainage openings which provide drainage paths through the sidewalls and which permit the sidewalls to be rolled into the spiral roll.

Abstract: A drain support plate for mounting and securing a drain assembly to a deck in a building structure.

Abstract: A passive venting device for venting enclosures comprising a base member, an intermediate splash member including a diverter, and a top, dome-shaped member. In a preferred embodiment, the diverter may be molded as a single unit of manufacture with the base member. The venting device allows air and other gases to escape from within an enclosure to be vented while preventing the intrusion of moisture, such as rain or snow, into the enclosure.

Abstract: A device for roof structures having a ridge or hip defined by the planes of two roof decks, disposed at an angle with respect to each other defining a longitudinal joint. A longitudinally extending cover with at least one coextensive channel defined by a bottom, two spacer walls and two lateral walls are mounted over the ridge or hip. The channel(s) increases the effective contact area to enhance the gripping action of the adhesive compound. From the longitudinal bends of the cover wall extend two perpendicularly extending walls with distal ends that continue with longitudinally coextensive flanges. The longitudinal flanges extend at an angle to be cooperatively and rigidly mounted over the roof decks with mechanical fasteners. An adhesive compound is positioned in the channel and over the cover.

Abstract: A vent pipe covering system for efficiently forming a seal between a vent pipe structure and a supporting structure. The vent pipe covering system generally includes a base, a body extending from the base and a coupler extending from the body opposite the base. The base includes a first opening and the body includes a passageway, wherein the passageway longitudinally extends through the body and interconnects with the first opening. The coupler includes a retaining cavity to extend over an outermost end of a pipe extending through the passageway and the first opening, wherein the body and passageway may expand and retract to accommodate various length pipes via an expandable portion of the body.

Abstract: A modular enclosure, such as a shed, may include sidewalls and a roof. The roof, for example, may include first and second roof panels that are separated by a seam. The roof may also include a truss that is sized and configured to support the roof panels. The truss may include a channel that allows any moisture entering the shed from between the roof panels to be removed from the shed. In particular, a portion of the first roof panel and a portion of the second roof panel may be at least partially disposed within the channel. Advantageously, the truss may be constructed from metal, which may allow a strong and sturdy shed to be constructed, and the roof panels may be constructed from blow-molded plastic, which may allow a lightweight and generally weather resistant shed to be produced.

Abstract: A vent is formed from vent panels that can be formed by injection molding or vacuum forming. The vent panels include upper and lower edges. The upper edge includes a nailing flange and a channel. The channel is coplanar with the outer surface of a nailing flange. The lower edge is a linear flange adapted to fit within the channel of the next adjacent vent panel. The vent includes a lower trim member that has a flange and a channel coplanar with the upper surface of the flange and adapted to receive the bottom edge of a vent panel. The lower trim member is designed to attach to the upper edge of vinyl siding. J channels or T channels are used then to trim out the remaining portion of the vent. This allows one to form a custom vent by combining vent panels as desired.

Abstract: A device for roof structures having a ridge or hip defined by the planes of two roof decks, disposed at an angle with respect to each other defining a longitudinal joint. A longitudinally extending cover with at least one coextensive channel defined by a bottom, two spacer walls and two lateral walls are mounted over the ridge or hip. The channel(s) increases the effective contact area to enhance the gripping action of the adhesive compound. From the longitudinal bends of the cover wall extend two perpendicularly extending walls with distal ends that continue with longitudinally coextensive flanges. The longitudinal flanges extend at an angle to be cooperatively and rigidly mounted over the roof decks with mechanical fasteners. An adhesive compound is positioned in the channel and over the cover. The adhesive is pressed so that part of it protrudes through the through openings positioned along the bottom, spacer and lateral walls that define the channel thereby creating a mechanical anchorage with the device.

Abstract: A roof panel system assembled from roof panels comprising a panel portion bounded along a support edge by a support element and along an opposed cover edge by a cover element. The cover element adapted to rest upon and provide resilient sealing and locking engagement with the support element of an adjacent panel. The support element adapted to provide resilient support and locking engagement with the cover element of a second adjacent panel. In an embodiment a panel cover is provided for shielding an upper surface of the panel portion and adapted to inter-fit and lock with engaged support element and cover element pairs along the support element and the cover element of the panel when the panel is engaged with adjacent panels when assembled. In an embodiment contoured insulated panels are provided as a base to support the panels. The contours providing passageways to allow the transport of air beneath the panels when assembled.

Abstract: Insulation spacer devices, methods and related construction techniques are provided. An exemplary device may include a body having a plurality of openings defining an openwork, to allow the passage of air therethrough when placed in contact with insulation material. The device may further include a plurality of spacer struts and/or spacing depressions fixedly attached to the body. The struts may be configured to maintain a predetermined distance between a first side of the insulation material and a building surface. The body and struts act together to define and maintain a space between the first side of the insulation material and the building surface, for example, for ventilation. The building surface can be the bottom face of a roof, an insulated attic floor, wall sheathing or a soundproofed demising wall, for example. The spacer device can be capable of being transported and stored together with, or as a separate item from, the insulation material, and can also be stored in nested layers.

Abstract: A self-registering roof ventilation system comprised of a panel including flanged lateral edges. At least one flanged lateral edge has a registration tab for registering with an adjacent panel. The panel is installed on top of roof framing members prior to the addition of roof sheathing so that the flanged lateral edges can be secured between the roof framing members and the roof sheathing. The panel in combination with the roof sheathing creates a vent channel for channeling air from soffit vents along the underside of the roof sheathing and out of the attic through a ridge vent. The panel may further comprises a baffle flap with a living hinge that is adjustable to any pitched roof. The baffle flap forms a barrier to stop insulation from the attic from getting into the eave space and obstructing the soffit vents. Additional panels can be added to extend the length of the vent channel.

Abstract: A roof ridge vent is formed with separation lines parallel with its outer edges which permit separation of the outer edge portions of the structure. In its original configuration, the roof vent structure may be used with wide cap shingles. Removal of the outer edge portions permits the ridge vent to be used in connection with narrower cap shingles.

Abstract: Covers for attic trap doors and pull down attic stairs or ladders are described each of which is formed of an insulating material. The covers are structured to effectively seal a ceiling access opening. In some embodiments, a closure member constructed of insulating material is cooperatively and frictionally received within a frame formed of the same material to form an airtight seal therebetween.

Abstract: A roof structure may be made with one or more sandwich panels having a round corner and installed with a drainage slope (e.g., 5-10 degree) to facilitate removal of liquid (e.g., water, rain, snow, sleet, etc.) from the roof structure. The round corner may have any desired curvature and/or angle for establishing a drainage area. A bonding material may be used to secure and/or seal the underlying interface of the round corner. The roof structure may be secured to an exterior wall by the bonding material.

Abstract: A precast under floor air delivery construction is provided which includes a plurality of precast concrete system having an upper base floor surface and a lower surface, a plurality of floor panel support means bearing directly to the upper base floor surface capable of an under floor air delivery between the floor panels and the upper surface, a plurality of access floor panels connected to the support means, and a fire protection barrier applied between the concrete slabs.

Abstract: An Interlocking Continuous Roof Assembly and Method for Wind Resistant Roofing is presented, whereby continuous double lock seams are used exclusively to join panels together. This roof manufacturing methodology results in a roof that possesses improved resistance to wind and water during storm conditions and thereby decreases the chances of the roof being damaged or destroyed by severe weather.

Abstract: A replacement ventilation cover and its method of installation in place of an old damaged ventilation cover. The replacement ventilation cover has a peripheral frame and an air permeable structure contained within the interior of the peripheral frame. Guides are prefabricated in the peripheral frame. The Guides hold nails or screws at acute angles relative to the plane of the opening being covered. To utilize the replacement ventilation cover, a central portion of the damaged ventilation cover is removed. This creates an opening without having to remove the nailing flange of the damaged ventilation cover. Consequently, the siding and trim around the vent opening does not have to be disturbed. The replacement ventilation cover is inserted into the remnants of the damaged ventilation cover. Nails or screws are then driven through the guides and into the construction under the old ventilation cover.

Abstract: Provided herein is an accessory kit for a curb-mounted skylight, including accessory frame members, corner keys, brackets, and an accessory. The frame members, which may have mitered ends, are sized to the dimensions of the skylight opening and are configured to interlock with a corner key element to form an accessory frame. The corner keys are configured to join the frame members at their respective mitered ends and include at least one detent for interlocking with a portion of the accessory frame member. Brackets are also provided for holding an accessory within the accessory frame, and an accessory (for example, blinds or a shade) having end portions complementary to the brackets is also included herein. The accessory kit may further comprise a flexible gasket. The kit may be shipped in an unassembled form and be assembled on-site without the need for tools.

Abstract: A siding system for efficiently increasing the longevity of an outer wall structure (i.e. siding, etc.) of a building. The siding system generally includes a siding assembly which includes a venting structure including a first support member and a second support member, wherein the first support member is attached to the second support member. A plurality of first passageways and a plurality of second passageways extend between the first support member and the second support member, wherein a first perimeter of the plurality of first passageways varies from a second perimeter of the plurality of second passageways. The venting structure is positioned between a first layer and a second layer of an outer wall structure to allow the layers to efficiently dry and prevent moisture from building up between the layers.

Abstract: A roof portion including solar roof panels and field vents is disclosed. The roof portion includes a sloped roof deck and a cover layer spaced above the roof deck to form a gap between the roof deck and the cover layer. The cover layer includes a layer of cover elements, and a field of one or more solar panels generally within the layer of cover elements. The cover layer also includes a first plurality of field vents positioned within the cover layer substantially immediately below the solar panel field. The cover layer further includes a second plurality of field vents positioned within the cover layer substantially immediately above the solar panel field. The field vents permit airflow between the gap and the atmosphere above the roof.

Abstract: A roof covering for a building having a roof with structured roof tiles and a structure projecting out from the roof surface, such as a chimney, a window, a wall, or ventilating pipe. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

Abstract: A roofing system in a building structure having a ridge vent includes strips of composite material having a base material adapted to form a hermetic seal with the top surface of a roofing section and recesses in a top surface in which an air permeable material can be positioned. A strip is applied to roof sections adjacent to each side of a ridge vent so that a ridge cap can overlay the strips in spaced relation from the underlying roof sections and be sealingly secured to the roof sections. The strip material establishes a barrier between the ridge cap and the roof sections through which air can pass, but through which the passage of rain and insects is inhibited.

Abstract: A roofing system has at least one roof panel, located above the base surface, having at least one longitudinally extending projection; a gap defined between the base surface and the projection; and a venting material located within the gap that both vents the gap and prevents ingress of moisture into the gap.

Abstract: Roof vents are configured to cover a ventilation opening formed in a roof deck. Roof vents can permit venting of an area underlying the roof deck while shielding the ventilation opening from condensation such as rain. Roof vents can also include a guard for shielding a ventilation area from outside debris.

Abstract: A roof ventilation assembly has a ridge framework corresponding to a vent on a roof, a top cover, front and rear panels and two baffler assemblies. The two baffler assemblies are respectively mounted on two sides of the ridge framework leaving two gaps between the baffler assemblies and the top cover. When heated air under the roof rises, the heated air goes through the vent and out of the slots. Therefore, the heated air can be expelled by the roof ventilation assembly cheaply and easily, without requiring maintenance and external power source.

Abstract: The present invention provides a water management building wrap that may be useable between a frame structure of a building and an exterior building covering. In at least one embodiment, the building wrap comprises a permeable membrane and an extruded polymeric drainage structure secured to the second side of the membrane. In at least one embodiment, the drainage structure includes a plurality of generally vertical members having a first thickness and forming boundaries for generally vertical water drainage channels, and a plurality of generally horizontal members attached to the generally vertical members and having a second thickness less than the first thickness and forming integral joints at intersections of the generally vertical members and the generally horizontal members that provide dimensional stability to maintain the orientation of the generally vertical members and form stable vertical water drainage channels.

Abstract: A passive venting device for venting enclosures comprising a base member, an intermediate splash member including a diverter, and a top, dome-shaped member. In a preferred embodiment, the diverter may be molded as a single unit of manufacture with the base member. The venting device allows air and other gases to escape from within an enclosure to be vented while preventing the incursion of moisture in the form or rain or snow into the enclosure.

Abstract: A baffled roll vent for covering the ridge slot of a roof for allowing ventilation from the space of a building below the ridge slot, the baffled roll vent comprising a unitary panel defined by a length and a width, said width terminating at discrete louver portions. The center hinge allows flexing of the panel to conform to the pitch of a roof. The baffled roll vent may be used with a fibrous mat placed under the louver portions to prevent entry of particulate matter from the outside environment.

Abstract: An off-peak intake vent includes spaced top and bottom walls defining a cavity therebetween and a pair of lateral side walls. The bottom wall has a generally planar bottom surface having at least one vent opening formed therethrough for communicating with an opening in a roof deck. The top wall has a curved portion that converges with the bottom wall at an uphill edge of the intake vent. The intake vent also includes air intake louvers defined between the top and bottom walls.

Abstract: An off-ridge vent for a roof may comprise a longitudinally-extending main body having an arcuate lateral cross-sectional shape with two ends, a front flange extending from one lateral side of the main body, and a rear flange extending the other lateral side of the main body; two end caps, each end cap attached to and closing one of the ends of the main body, each end cap including a face portion which attaches to the main body and a side flange extending from the face portion; wherein, at least one of the end caps comprises a vented portion. The rear flange of the main body and the side flanges of the end caps may comprise return flanges that assist in redirecting any water that contacts the flange. The vent may overlay an aperture in the roof such that air may flow through the aperture and out the axial vent ends.

Abstract: A rollable roof ridge ventilation element for slanted roofs comprises a ribbon-type, air-permeable carrier material. Edge strips of an elastically deformable film are connected to edge regions of the carrier material. Each edge strip includes an upward-pointing fold in a longitudinal direction of the ventilation element presenting a wind-repelling lip. Each edge strip has transverse undulations, and the wind-repelling lip of an edge strip includes undulations that extend transverse to a longitudinal direction of the wind-repelling lip and correspond to the transverse undulations of the edge strip.

Abstract: To flash a hot gas vent pipe, representatively a chimney pipe, extending upwardly through a roof opening, a tubular sleeve having vertically extending spacer members interiorly secured thereto, with upper ends projecting above the upper sleeve end, is concentrically placed around the chimney pipe and anchored to the roof. A rubber boot is then placed around the sleeve and secured to the roof. Finally, a storm collar is downwardly telescoped onto the chimney pipe and rests on the upper end of the sleeve spacer members. Vertical cooling passages are defined between adjacent spacer member pairs, and through their interiors, and have upper exit portions communicating with the storm collar interior.

Abstract: A wall-mounting frame is used to mount fixtures to building walls having siding. The wall-mounting frame includes two major parts, a base section and a holding section which are non-detachably connected to each other. The holding section is separated into two halves which pivot about the base section to hold surrounding siding to the base section once it has been attached to a wall substrate. The present design eliminates the need for special hardware to attach the holding section to the base section, and helps prevent awkward mounting situations.

Abstract: An apparatus and method are provided for screening odor emitters for one or more target odors. A screening station is adapted to permit an odor emitter, such as a pedestrian or vehicle, to pass through the screening station. An observation room contains a dog trained to identify at least one target odor. An airflow inducer; directs airflow through the screening station. A porous passage allows airflow from the screening station to the observation room. Air flows through the screening station to entrain odors emitted in the screening station and passes through the porous passage for sensing by the dog.

Abstract: A roof ridge vent includes a receptacle adapted to receive a fastener and located in the top wall of the roof ridge vent. The fastener is embedded in the top wall and positioned in the receptacle.

Abstract: The present invention relates to an improved commercial rooftop enclosure that utilizes a roof and wall panel design incorporated with structurally bent rails connecting the panel assemblies to each other and to a corrugated panel steel base. This forms the enclosure into a torsion box style building wherein the strength of the enclosure is derived from its overall “unibody” style construction. With this design the rooftop enclosure offers a lower overall profile, reduced weight and increased structural strength over its conventional counterparts.

Abstract: A wind directional vent and skylight combination including: (a) a throat which may be in the form of a hood (60) rotatably mounted to a structure such as a building and in communication with a cavity to be exhausted such as a room of the building; (b) wind directional means associated with the hood (60), the wind directional means optionally being inherent in the shape and configuration of the hood (60), the wind directional means causing the hood (60) to rotate in response to changes in wind direction, wherein the hood (60) is made from material adapted to permit the passage of light therethrough.

Abstract: A roof ventilation apparatus for a sloped roof having a cap and base plate is provided. The cap has a top surface and a bottom surface. The bottom surface has a flange that defines an opening to a cavity formed between the top and bottom cap surface. The cavity provides a path for air exchange from a roof opening through an air passage formed between the flange and cap top. The base plate has a collar or curb surrounding an aperture that fits inside the cap bottom cavity. The base plate preferably is shaped such that when installed on the sloped roof the cap entirely covers the base plate. Preferably, the base plate includes a collar and an angled edge configured to channel moisture that seeps within the vent cap.

Abstract: A floor grommet for use in building and office structures supplied with air conditioning via under floor plenum. Directed flow of conditioned air is optimized by limiting the escape of air from the plenum into the space above the floor by leakage through floor openings provided for power cables, data cables and the like. Specialized floor grommets installed in the cable openings are comprised of a surrounding frame mounting sealing elements comprised of thin, flexible elements which are anchored at one end in the grommet frame and extend toward the center of the opening, from each side, to effectively close the opening against significant flow of conditioned air from the plenum below. Cables passing through the grommet opening cause minimal deflection of the flexible elements to limit the escape of conditioned air. Preferably, the resilient, flexible elements are filamentary in nature.