Opp -113
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 5920-01-347-2658
NSN 2925-01-151-6969
NSN 5965-01-113-7400
NSN 5999-01-501-9023
NSN 5920-00-880-6581
NSN 6220-00-961-0509
NSN 5950-01-502-8219
NSN 6145-01-309-6146
NSN 6685-01-387-6505
NSN 5910-01-088-5342
NSN 6130-00-174-8605
NSN 5835-00-617-3578