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 6145-01-634-0388
NSN 6105-01-247-0398
NSN 2925-01-419-3805
NSN 5945-01-440-1185
NSN 5950-01-021-4654
NSN 6650-01-530-6629
NSN 2925-01-362-2515
NSN 6620-01-564-3041
NSN 6685-01-468-5781
NSN 5910-01-375-2391
NSN 5855-00-118-8762
NSN 6105-01-201-0983