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 7035-00-371-7749
NSN 5999-00-753-7450
NSN 6685-01-025-1587
NSN 5935-00-970-2726
NSN 6240-01-339-0069
NSN 6240-01-502-7103
NSN 6150-01-439-5394
NSN 5855-01-389-8884
NSN 6105-00-194-9945
NSN 2925-01-345-9439
NSN 6130-01-385-0266
NSN 5925-00-878-1941