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 5999-01-258-5930
NSN 5930-01-195-8649
NSN 5945-01-337-3848
NSN 5915-01-164-6663
NSN 5920-01-204-6092
NSN 5998-01-555-8786
NSN 6620-01-430-7104
NSN 5910-00-419-7298
NSN 7035-01-287-9817
NSN 6105-01-583-2048
NSN 6645-00-761-5148
NSN 5835-01-632-6627