4 inches long
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 6610-01-112-8137
NSN 5996-01-305-6509
NSN 6220-01-246-2985
NSN 5835-01-232-1226
NSN 5965-01-540-6843
NSN 4140-00-227-8228
NSN 5998-00-822-3119
NSN 5935-00-074-4337
NSN 6620-01-070-9042
NSN 5855-01-533-0996
NSN 5915-01-244-9394
NSN 5945-00-907-8746