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 5985-01-357-1398
NSN 5835-01-163-4215
NSN 6620-01-138-0089
NSN 5905-01-582-8708
NSN 5990-01-315-3754
NSN 6105-01-172-2372
NSN 5990-01-313-5543
NSN 6220-01-112-3594
NSN 6130-01-014-5419
NSN 5855-01-188-4049
NSN 6240-00-811-4640
NSN 6145-01-627-0469