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 6650-01-191-1669
NSN 2925-00-520-9546
NSN 6145-01-341-4888
NSN 5910-00-803-3139
NSN 5930-01-357-4973
NSN 6320-00-270-8222
NSN 6150-00-238-6910
NSN 5915-01-465-0839
NSN 6110-01-446-7482
NSN 6145-01-358-4001
NSN 5945-00-346-6922
NSN 4140-01-391-6462