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 5998-01-487-7058
NSN 5950-00-707-6107
NSN 6130-00-067-4097
NSN 5910-01-162-8552
NSN 5965-01-483-7244
NSN 5996-00-260-8291
NSN 6320-01-209-0952
NSN 5990-00-003-4464
NSN 5935-01-440-4829
NSN 5910-00-505-9145
NSN 6240-01-359-2721
NSN 5920-00-837-2633