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 5935-01-634-0668
NSN 5905-00-758-9116
NSN 6645-01-099-6887
NSN 6220-00-504-2943
NSN 5996-01-561-0151
NSN 5910-00-423-7348
NSN 5855-01-308-0955
NSN 6130-00-660-8703
NSN 5915-01-230-5993
NSN 5965-01-546-3696
NSN 5930-00-563-4246
NSN 5920-01-065-1824