Gas Plug G0101-5W-50 Gas Outlet Box with 1/2-Inch Inlet, 3/8-Inch Outlet and White PVC Enclosure 1/2-Inch Inlet connection, 3/8-Inch kwik disconnect 60,000 BTU NG/90,000 BTU LP Thermal valve shuts off gas flow in conditions of 300-Degree Fahrenheit or more Clean compact design conceals unsightly pipes and valves Complete with standoffs for siding installation