19.520 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 6110-01-469-0714
NSN 6135-01-104-3790
NSN 4140-01-620-6384
NSN 5935-01-210-4999
NSN 5990-01-303-6110
NSN 6645-00-841-0026
NSN 5960-01-543-0235
NSN 6110-00-269-2696
NSN 5960-01-578-5537
NSN 5950-00-421-3629
NSN 5965-01-523-4572
NSN 6685-01-142-4572