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 6145-01-559-9793
NSN 5915-00-498-5866
NSN 5998-01-461-4814
NSN 6220-01-593-0061
NSN 5910-00-960-0143
NSN 5910-01-211-6063
NSN 5998-01-512-5441
NSN 6130-01-170-4059
NSN 5835-00-778-5761
NSN 5965-00-168-9624
NSN 5905-01-423-7710
NSN 5998-01-046-2943