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 5998-00-703-3593
NSN 5925-01-334-8402
NSN 6645-00-233-4286
NSN 5920-01-607-4346
NSN 6150-01-371-3023
NSN 5996-01-395-2879
NSN 5996-00-820-4703
NSN 6320-01-225-0178
NSN 6150-01-373-6503
NSN 6105-01-270-6839
NSN 2925-01-606-3201
NSN 5950-01-018-2363