19.710 in.Lg, 3.000 in.Id, 0.380 in.Thk;
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: Other parts of airplanes or helicopters for use in military aircraft (excludes propellers, rotors, undercarriages, and parts thereof)
NSN 6650-01-529-0151
NSN 6130-00-375-6299
NSN 5990-01-307-4489
NSN 5920-00-824-7678
NSN 6620-01-497-3744
NSN 5998-01-456-6016
NSN 5920-00-598-0469
NSN 5990-00-130-1930
NSN 6110-01-417-8928
NSN 6145-01-056-5171
NSN 5965-01-528-6453
NSN 6650-01-538-6898