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 6320-01-560-7177
NSN 5985-01-286-2874
NSN 5855-01-089-2248
NSN 5935-00-960-4162
NSN 5835-01-126-9358
NSN 6130-00-212-4883
NSN 5975-00-564-0476
NSN 5990-01-544-4360
NSN 5920-00-099-0826
NSN 5996-01-242-9710
NSN 5998-01-511-1192
NSN 5975-01-030-0989