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 5935-01-153-0954
NSN 5990-00-498-5934
NSN 5960-01-408-2062
NSN 6685-01-306-7813
NSN 5905-00-708-0891
NSN 5965-01-270-6832
NSN 4140-00-164-6832
NSN 5999-00-275-7327
NSN 2925-01-553-3546
NSN 6610-00-941-0509
NSN 6645-00-922-0886
NSN 5930-01-333-6154