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 5998-01-300-8727
NSN 6645-00-102-0015
NSN 6645-01-381-2050
NSN 6240-01-350-3533
NSN 5910-01-178-8366
NSN 5990-01-453-3552
NSN 5905-01-634-0595
NSN 5925-01-559-7421
NSN 6130-01-458-1088
NSN 5945-00-202-9741
NSN 5996-00-932-5301
NSN 6320-01-449-1014