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 5905-01-328-4921
NSN 6135-01-500-0572
NSN 5975-00-079-0022
NSN 5985-01-054-3578
NSN 5990-00-146-3534
NSN 5990-01-395-4194
NSN 5990-01-421-3325
NSN 6110-01-189-9964
NSN 5855-01-472-6667
NSN 6610-01-013-8922
NSN 5960-01-649-1341
NSN 5920-01-616-0011