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 5855-01-138-4985
NSN 6135-01-377-5729
NSN 5895-01-533-5176
NSN 5835-00-827-1904
NSN 6110-01-500-0768
NSN 7035-01-364-0286
NSN 5985-01-476-8182
NSN 5920-01-521-3087
NSN 5895-01-363-4110
NSN 5996-00-908-1233
NSN 6610-01-498-4063
NSN 5920-01-361-7812