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 5950-01-363-8215
NSN 5945-01-527-0164
NSN 5985-00-200-9876
NSN 4140-01-242-2296
NSN 2925-00-555-8836
NSN 5835-01-263-1293
NSN 6135-01-621-4927
NSN 5975-00-301-5762
NSN 6145-00-265-6190
NSN 5985-01-428-4484
NSN 5999-01-586-6151
NSN 5945-01-010-1680