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.
Classification: Insulation products of glass fibers
NSN 5835-00-740-0246
NSN 5855-00-055-1694
NSN 5835-01-113-4604
NSN 6650-00-680-9595
NSN 6620-00-722-3875
NSN 4140-01-267-1844
NSN 6620-00-900-3986
NSN 6145-01-391-5022
NSN 5925-01-292-6570
NSN 6645-01-076-4655
NSN 6610-01-226-7612
NSN 6110-01-633-9660