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.
NSN 6135-00-835-2330
NSN 5930-01-227-9344
NSN 6650-01-366-1530
NSN 6650-01-223-0852
NSN 5910-01-403-2812
NSN 6320-01-426-8947
NSN 6110-00-988-6875
NSN 6320-01-478-7338
NSN 5975-01-151-0299
NSN 6620-00-168-0308
NSN 5960-00-163-3324
NSN 5855-00-288-1408