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 6145-01-212-3528
NSN 5915-01-167-8506
NSN 5990-00-888-7761
NSN 6110-01-135-2027
NSN 4140-00-542-4611
NSN 6145-01-534-2748
NSN 5910-00-015-7507
NSN 5965-01-392-0049
NSN 5990-01-240-1100
NSN 2925-01-512-4682
NSN 5965-00-102-8521
NSN 5965-00-223-6354