Residential, RV/mobile home, and commercial gas appliances not subject to frequent movement. CSA-approved for indoor and outdoor use. Can be used in residential kitchen, laundry/utility appliances and permanent residence mobile homes. (Not recommended for infrared radiant tube heating systems). The Procoat polymer coating resists sea salt, UV rays and the harsh chemical residue and vapors from common household cleaning, plumbing repair, and buildig products.