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 2925-01-589-9136
NSN 6650-00-864-2942
NSN 6130-00-201-3710
NSN 5930-01-341-6471
NSN 5920-01-351-7936
NSN 5895-00-443-6237
NSN 5935-00-178-6075
NSN 6150-01-508-9442
NSN 6150-00-296-2361
NSN 5855-01-447-3137
NSN 7035-01-276-0355
NSN 6145-01-433-9079