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 5965-01-627-3774
NSN 5996-00-981-4239
NSN 5950-01-592-2420
NSN 6130-01-501-5412
NSN 5930-00-085-8957
NSN 5935-01-343-0821
NSN 5975-01-524-0637
NSN 6645-01-395-2989
NSN 6610-00-308-9034
NSN 6320-00-089-9426
NSN 6135-01-069-2482
NSN 5895-01-640-8024