Abstract: An insulation product is provided comprising a sheet of randomly oriented fibers bonded by a binder. The sheet has first and second major surfaces and a pair of side portions. A facing layer is bonded to at least one of the major surfaces. A region of the sheet proximate to the facing layer is more puncture resistant than a remainder of the sheet.

Abstract: An insulation product is provided comprising a sheet of randomly oriented fibers bonded by a binder. The sheet has first and second major surfaces and a pair of side portions. A facing layer is bonded to at least one of the major surfaces. A region of the sheet proximate to the facing layer is more puncture resistant than a remainder of the sheet.

Abstract: An insulation product is provided comprising a sheet of randomly oriented fibers bonded by a binder. The sheet has first and second major surfaces and a pair of side portions. A facing layer is bonded to at least one of the major surfaces. A region of the sheet proximate to the facing layer is more puncture resistant than a remainder of the sheet.

Abstract: Metal building insulation includes a non-woven covering material over the top surface of a double layer of glass fiber, with a vapor retarder between the layers, protected by a porous film.

Abstract: A permanent stud wall structure having improved sound transmission loss comprising two substantially parallel rows of spaced apart vertically extending support members secured at their ends to a base and header respectively by appropriate means and defining a stud cavity; said vertically extending support members being located in each of said rows such that there is a corresponding support member in the other row that is in substantially the same plane running perpendicular to said rows; one or more horizontally extending relatively rigid support members extending between one or more corresponding vertically extending support members and being secured to said vertically extending support members by appropriate securing means; said horizontally extending members including a vibration isolator means to reduce the transmission of sound between opposite ends thereof; and one or more layers of a covering material secured to the outwardly facing surfaces of one or more of said vertically extending support members s

Abstract: A gas boiler having a boiler unit constructed by interconnected boiler sections each having an internal waterway bounded by one or more heat transfer surfaces. Baffles on the boiler sections define serpentine flue passages, and the baffles include bypass openings formed by notches and/or slits to suppress standing waves and associated noise. A burner includes a conical burner element having burner ports arranged in clusters to enhance the flame distribution and stability. A distributor cone nested within the burner element provides a pressure drop for noise suppression. The blower shaft is equipped with a magnetic plastic washer which effects a seal against air infiltration while allowing the blower shaft to shift from side to side.

Abstract: A gas boiler having a boiler unit constructed by interconnected boiler sections each having an internal waterway bounded by one or more heat transfer surfaces. Baffles on the boiler sections define serpentine flue passages, and the baffles include bypass openings formed by notches and/or slits to suppress standing waves and associated noise. A burner includes a conical burner element having burner ports arranged in clusters to enhance the flame distribution and stability. A distributor cone nested within the burner element provides a pressure drop for noise suppression. The blower shaft is equipped with a magnetic plastic washer which effects a seal against air infiltration while allowing the blower shaft to shift from side to side.