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 5990-01-024-9659
NSN 5910-00-221-2889
NSN 5990-00-005-5215
NSN 5996-00-270-0340
NSN 5915-01-236-5627
NSN 5996-00-247-3808
NSN 6620-00-054-4778
NSN 5930-00-269-3740
NSN 5910-00-068-6524
NSN 6105-01-472-1802
NSN 6240-00-799-1528
NSN 6150-00-788-2981