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 7035-00-834-2090
NSN 6110-00-309-2898
NSN 2925-01-444-2061
NSN 6220-01-338-8342
NSN 6150-01-177-3555
NSN 5915-01-264-8967
NSN 5990-00-576-4882
NSN 5835-01-222-2437
NSN 6610-01-590-2263
NSN 5915-01-093-5227
NSN 4140-01-388-0340
NSN 5905-01-420-6202