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 5910-00-811-2368
NSN 6135-01-142-6456
NSN 2925-00-928-0045
NSN 5965-00-682-3567
NSN 5975-00-700-8215
NSN 6685-01-206-1066
NSN 6320-01-399-6177
NSN 5895-01-475-1849
NSN 5996-01-274-9453
NSN 5999-01-312-4668
NSN 5960-00-425-9740
NSN 6240-00-383-7668