19.710 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 6110-01-571-3745
NSN 5965-00-434-7617
NSN 5990-01-299-2014
NSN 6240-00-502-7710
NSN 7035-00-919-3381
NSN 6685-01-484-8804
NSN 5999-01-519-5914
NSN 2925-01-603-6379
NSN 5895-01-543-3514
NSN 5990-00-962-2806
NSN 6650-01-058-0049
NSN 6685-01-281-8860