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 5996-01-532-5033
NSN 5945-01-318-1086
NSN 6645-01-338-9152
NSN 6320-00-468-8421
NSN 5950-00-411-0853
NSN 5920-00-709-7835
NSN 5855-01-508-6917
NSN 6220-00-079-0851
NSN 5895-01-521-3236
NSN 5910-01-648-2045
NSN 6320-00-382-7825
NSN 5835-01-202-9673