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 5965-00-757-3403
NSN 6610-01-041-1880
NSN 6220-00-171-8638
NSN 6150-01-449-1217
NSN 5935-01-058-9327
NSN 5998-00-537-0879
NSN 5910-01-487-5387
NSN 6320-01-578-6006
NSN 4140-00-473-8189
NSN 5945-01-354-5173
NSN 5990-01-052-9343
NSN 5930-00-071-1485