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 6610-01-212-2969
NSN 5915-00-389-1126
NSN 5965-01-100-2591
NSN 5895-01-237-8635
NSN 7035-00-166-0339
NSN 5945-01-505-3717
NSN 5998-00-343-7435
NSN 5930-00-082-1655
NSN 6150-01-606-8911
NSN 6130-01-584-9057
NSN 5920-01-205-2049
NSN 5950-00-051-5686