RV Horizontal, 2 Stage, Propane, Regulator, Integral First & Second Stages Ensure A Smoother, More Consistent Flow Of Gas To All Appliances, Inlet: 1/4" Female National Pipe Thread, Outlet: 3/8" Female National Pipe Thread, Outlet Pressure: 11" WC, BTU Capacity Propane: 160,000 BTU Per Hour, CSA Listed.