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 6645-01-540-7989
NSN 5950-00-224-7878
NSN 5975-00-793-5550
NSN 5930-00-827-0907
NSN 6610-00-583-1084
NSN 6320-00-036-3688
NSN 5990-01-253-1332
NSN 4140-01-130-7858
NSN 5965-01-298-1685
NSN 6320-01-158-2177
NSN 5996-01-298-7985
NSN 5910-01-074-3599