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 5915-00-457-9296
NSN 6650-01-051-7962
NSN 5950-00-803-8025
NSN 6610-00-631-8303
NSN 5925-00-928-2621
NSN 2925-01-027-1293
NSN 6650-00-801-8298
NSN 5999-01-606-1887
NSN 5925-00-238-6376
NSN 5950-00-377-3774
NSN 5855-01-128-1762
NSN 2925-01-381-5307