Abstract: An arcuate molded flexible plastic pipe saddle for supporting an insulated pipe secured to a surface having a pair of flexible hinge-like joints molded integrally therewith for accommodating insulated pipes of varying overall diameters, and having stiffening ribs molded similarly for strengthening the saddle under load, and means molded integrally with the saddle at the external central underside thereof for attachment of the saddle to a support means. Typical support means may be a U-shaped pipe-supporting member, such as a clevis hanger, for use with a clip-in fixture or a support channel for use with a drop-in twist-and-lock fixture for holding the saddle and adjustable means for securing said U-shaped pipe-supporting member to an overhead surface. The support channel may be used for overhead or underfoot surfaces. For vertical surfaces, a hanging J-shaped wall support member in conjunction with the clip-in version is indicated. Methods of installation are disclosed.

Abstract: A molded plastic take-off collar for joining main and branch ducts in forced air heating, cooling, exhaust and ventilation systems having a tubular member with a first end perpendicular flange, and a second end having gripping beads and a stopping edge for attachment to a branch duct. Molded strengthening ribs are formed at the external intersection of the tube and flange; while truncated rims are formed extending from the inner walls of the tube to positively seat a damper flap wherein opposite sides have two protruding threaded pivot pins, which flap can be flexed for insertion of the pins into two opposite openings in the wall of the tube. The damper flap is a unitary structure with the molded pins and molded strengthening beads therefor. A handle and wing nut are provided for positioning the flap. A flexible double-sided adhesive covered ring facilitates joining of the take-off collar to the main duct.