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.
Classification: Insulation products of glass fibers
NSN 6220-01-301-1349
NSN 4140-00-784-7960
NSN 5905-01-445-4565
NSN 5935-01-228-1827
NSN 5999-01-175-5311
NSN 6150-01-571-9076
NSN 5998-01-149-9329
NSN 5975-01-308-8752
NSN 5920-01-651-7453
NSN 6145-00-703-6292
NSN 6130-00-881-4467
NSN 5895-01-507-7141