Gas Plug G0101-SS-50 Gas Outlet Box with 1/2-Inch Inlet, 3/8-Inch Outlet and Gas Outlet Box and Stainless Steel Enclosure 1/2" NPT Inlet, 3/8" Quick Disconnect Outlet, Male Plug Included 60,000 BTU NG/90,000 BTU LP Thermal valve shuts off gas flow in conditions of 300-Degree Fahrenheit or more C/W adjustable standoffs for siding installation Surface Mounted Stainless Steel Enclosure