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 6240-01-054-2289
NSN 6150-00-042-9787
NSN 6650-00-098-6128
NSN 6320-00-300-5556
NSN 6650-01-215-4487
NSN 5950-00-189-0551
NSN 6110-01-237-9756
NSN 5835-01-227-4752
NSN 4140-01-579-3566
NSN 5905-00-516-2871
NSN 6150-00-352-5620
NSN 5910-00-250-9390