This specification covers stainless steel jacketing for thermal, acoustical, and fire protective insulation operating at either above or below ambient temperatures and in both indoor and outdoor locations. It does not cover insulation jacketing made from other materials such as mastics, fiber reinforced plastic, PVC, aluminum, or coated carbon steel (for example, aluminum-zinc, galvanized steel, or aluminized steel) nor does it cover the details of thermal, acoustical, or fire protective insulation systems. While not intended to cover use inside the containment buildings of nuclear power plants, this specification does not preclude use of Class E material which does not have a moisture barrier in this containment building application. This specification provides physical requirements for stainless steel jacketing for thermal and acoustical insulation.