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 5999-00-753-7450
NSN 5996-00-806-9287
NSN 5895-01-323-4754
NSN 6145-01-606-9669
NSN 5920-00-504-8634
NSN 5835-01-485-0210
NSN 5996-01-129-4873
NSN 6135-00-100-8890
NSN 5910-01-200-7790
NSN 5915-01-051-1984
NSN 6645-01-076-4655
NSN 6150-01-312-3484