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 5855-01-218-3735
NSN 5998-01-571-7615
NSN 5999-00-572-5758
NSN 6320-00-593-0379
NSN 5996-01-195-1307
NSN 5975-01-417-1752
NSN 6150-01-570-8388
NSN 5985-01-445-5150
NSN 6320-00-116-3658
NSN 5960-01-457-0157
NSN 5925-00-363-9578
NSN 6110-01-496-8501