19.520 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 6650-01-091-2435
NSN 5895-01-425-2718
NSN 5935-00-007-8148
NSN 5920-00-438-4973
NSN 6610-01-572-5149
NSN 6620-00-820-9616
NSN 6130-00-131-3651
NSN 5999-01-203-0029
NSN 5975-00-374-5245
NSN 6685-00-944-6899
NSN 5998-00-232-4968
NSN 6610-01-307-6363