Gas water heaters for industrial purposes; gas heating boilers; gas furnace boilers; gas hot water boilers; industrial boilers, other than parts of non-electric prime movers or engines; hot-water space heating apparatus for industrial purposes; air conditioners for industrial purposes; gas ranges for industrial purposes; gas water heaters for household purposes; gas water heaters; gas ranges for household purposes; gas cooking ovens for household purposes; gas stoves; hot water heating installations for household purposes; water heaters; hot water heating installations; bathroom heaters
Environmental Control Apparatus