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 6135-01-400-2947
NSN 5950-01-486-9451
NSN 6240-01-341-9070
NSN 5855-01-594-7809
NSN 2925-00-338-4667
NSN 6240-01-026-7690
NSN 6135-00-880-1026
NSN 6145-01-101-2063
NSN 5835-00-190-3401
NSN 6145-00-635-9957
NSN 6645-01-265-0648
NSN 6620-01-337-0652