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 5915-01-092-3995
NSN 5915-00-584-3512
NSN 6220-01-534-3244
NSN 5975-01-553-8896
NSN 5835-00-143-4153
NSN 5996-00-162-6083
NSN 5990-00-402-7721
NSN 6105-01-298-6345
NSN 5915-00-591-7831
NSN 5925-01-151-5137
NSN 5965-01-234-6844
NSN 5990-00-403-9768