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 5915-01-090-6284
NSN 6145-01-340-8071
NSN 6320-01-478-9351
NSN 5985-01-488-1095
NSN 5950-01-091-9436
NSN 5855-01-020-7982
NSN 5905-00-011-7195
NSN 5925-01-345-0992
NSN 5895-01-619-1094
NSN 4140-00-580-8508
NSN 6240-01-455-3786
NSN 6110-01-468-7776