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 5915-00-433-2053
NSN 6130-00-692-2916
NSN 5985-01-464-4528
NSN 5925-01-420-0467
NSN 7035-00-337-8745
NSN 7035-01-587-3108
NSN 5835-01-126-9358
NSN 6240-01-542-8886
NSN 5930-01-143-0825
NSN 6240-00-518-3541
NSN 5975-00-479-8050
NSN 6240-00-551-3144