Burnaby Manufacturing Ltd G0101-SS-50-BI Stainless Steel Gas Plug 1/2" NPT Bottom Inlet, 3/8" Quick Disconnect Outlet, Male Plug Included 60,000 BTU Natural Gas/90,000 BTU Propane Thermal valve shuts off gas flow in conditions of 300-Degree Fahrenheit or more C/W adjustable standoffs for siding installation and 1/2" adaptor for bottom connection Stainless Steel Surface Mount Enclosure