An item composed of one or more materials, molded, compressed, and/or baked into a rigid covering of irregular shapes and sizes. it is designed to cover air ducts and/or air duct fittings used in air conditioning, heating, cooling, pressurizing and de-icing systems to restrict the dissipation of heat. it may completely or partially encase the item for which designed. it may be furnished with or without fillers, cement, and/or separate or attached accessories for installation, (excluding flexible air duct covering and rigid pipe and pipe fitting coverings used in construction and building materials). Excludes insulation blanket, thermal, aircraft; insulation pipe fitting covering, thermal; and insulation sleeving, thermal.
NSN 6220-00-805-9889
NSN 5915-01-431-6951
NSN 5985-01-469-6320
NSN 6240-00-526-0243
NSN 6320-01-338-6006
NSN 6105-00-760-5607
NSN 5945-01-287-9219
NSN 5990-01-579-2711
NSN 6105-00-124-3448
NSN 6110-01-047-5674
NSN 6650-01-042-3564
NSN 5915-01-469-3172