Abstract: An access panel for an opening in a duct is provided. The access panel includes an exterior and an interior. The access panel further includes a section positioned on the interior and having a profile substantially corresponding to the opening in the duct. A plurality of fasteners is positioned about the section. Each fastener has a dip configured to move to a position defined to extend away from the profile of the section on the interior. When the access panel is positioned with the section on the interior against the opening in the duct and the fasteners are moved to the locking position the clips rotate to extend over the profile and secure a portion of the duct adjacent to the opening against the interior of the access panel.

Abstract: A cost-effective and energy-efficient system and method for building construction, such as for residential dwellings and the like, uses dual-wall building envelope system having outer walls and corresponding partition walls spaced outwardly from the outer walls. The envelope system provides ample space for insulation to enhance the thermal efficiently of the house or building, while permitting construction at reduced cost using pre-fabrication methods.

Abstract: A reinforcement for an expandable or foaming material is disclosed that comprises a first and a second member each having protuberances that are contacted when the first and second members are joined. The members are joined by bending a hinge that separates the members, or can be joined in multiple units to form a series. The members are maintained in a closed or joined position by at least one latch. Once joined, the first and second members define at least one opening wherein a foaming composition can be injected into the joined members. Alternatively, a preformed expandable material can be placed between the first and second members, or located on selected outer positions, e.g., within an automotive cavity to be sealed.

Abstract: Soffits for interior construction purposes are preformed from U-shaped foam material having inset furring strips for attaching the soffits to walls and/or ceilings and, in some cases, for also hanging cabinets from the soffits. The preformed soffits are brought to the job site, quickly cut to length, fastened and/or glued in place, and then covered with plasterboard before the cabinets are mounted below.