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 5975-01-366-3671
NSN 5835-01-112-9008
NSN 6110-00-598-2574
NSN 6620-01-322-6193
NSN 5835-01-383-1313
NSN 6650-01-181-2831
NSN 6240-01-140-8762
NSN 5950-01-544-7437
NSN 5910-01-109-8441
NSN 5905-01-588-8846
NSN 5999-01-418-8503
NSN 5975-01-069-4689