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 6105-00-253-9279
NSN 5999-00-143-1818
NSN 5855-01-068-3683
NSN 5999-01-485-1701
NSN 5910-01-231-2215
NSN 5855-01-052-0353
NSN 2925-00-957-7329
NSN 6645-01-221-9424
NSN 6145-01-174-5268
NSN 6110-01-586-0219
NSN 6610-01-220-9986
NSN 6220-00-199-9401