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 5975-00-233-6301
NSN 6685-00-404-3715
NSN 5920-01-571-1560
NSN 6610-00-915-0574
NSN 5895-00-585-2038
NSN 6645-00-356-5705
NSN 5950-00-116-7466
NSN 5985-00-277-7371
NSN 5910-00-081-2215
NSN 6645-01-070-1210
NSN 6685-01-364-0661
NSN 5975-01-156-4544