12 inches olng
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 6220-01-617-1256
NSN 6130-01-317-4239
NSN 5925-01-440-3125
NSN 6110-00-622-1434
NSN 4140-00-311-6329
NSN 5990-00-900-4459
NSN 6135-01-159-9705
NSN 5835-00-779-2836
NSN 4140-01-653-0130
NSN 6685-00-042-4443
NSN 5996-00-702-5664
NSN 5965-00-196-7320