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 6130-00-651-1670
NSN 6220-00-292-3917
NSN 6620-01-423-7300
NSN 5960-00-584-4553
NSN 5996-00-859-3188
NSN 6145-01-570-3895
NSN 4140-01-410-8615
NSN 6105-00-925-5372
NSN 5965-01-558-5380
NSN 5925-00-246-4645
NSN 5999-01-604-0685
NSN 5835-01-192-4165