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 6685-00-907-4922
NSN 6130-00-518-4305
NSN 5935-01-316-7019
NSN 6240-00-151-7642
NSN 7035-01-459-3520
NSN 7035-00-275-5604
NSN 5965-01-338-2181
NSN 7035-01-211-5636
NSN 6145-01-440-5754
NSN 6650-01-006-3487
NSN 5945-00-262-0888
NSN 4140-00-197-9712