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 6110-01-095-3519
NSN 5915-00-186-6490
NSN 6135-00-643-4843
NSN 5910-01-500-2257
NSN 6685-01-468-5471
NSN 5999-01-543-6817
NSN 5950-01-417-4730
NSN 6150-01-622-6154
NSN 5935-01-594-1248
NSN 6240-00-068-0249
NSN 6685-01-245-9862
NSN 6135-00-284-1406