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 5945-01-181-3594
NSN 5915-01-249-3113
NSN 6620-00-350-5817
NSN 6620-00-460-2909
NSN 2925-01-154-2949
NSN 6650-01-399-8552
NSN 6620-01-611-7907
NSN 7035-00-111-4389
NSN 5905-00-824-0194
NSN 5925-00-891-4079
NSN 6135-01-571-0845
NSN 6150-00-753-3950