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 5965-01-533-7687
NSN 5975-00-136-1254
NSN 5915-00-244-4210
NSN 6130-00-981-5575
NSN 6620-00-858-7317
NSN 6240-01-144-3864
NSN 5910-00-787-3767
NSN 6105-01-367-2269
NSN 6240-00-727-2457
NSN 5945-00-479-7955
NSN 5965-00-378-3403
NSN 6610-00-500-0180