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 5975-01-348-8938
NSN 4140-00-126-4594
NSN 5895-01-295-2714
NSN 6135-01-236-8603
NSN 5965-01-067-9280
NSN 5985-01-504-9353
NSN 5998-01-578-6064
NSN 5965-01-425-1086
NSN 5905-01-462-5965
NSN 6240-01-362-2467
NSN 6150-01-602-9253
NSN 5996-00-153-3216