Brasscraft CSSD44-48 Gas Dryer and Water Heater Flex-Lines Corrosion Resistant Coating Protects From Exposure To Harsh Cleaning and Plumbing Repair Products Stainless Steel Construction Ranges, Water Heaters and Cooktops Up To 60,500 Btu 100-Percent Leak Tested Approved for Lp (propane) and Natural Gas