Mr. Heater F273863 Horizontal Vent Propane Two Stage Regulator, 1, Brass/Black Excess flow soft nose POL 3/8" female pipe thread outlet Horizontal vent 200,000 BTU max flow 1-year limited warranty Excess flow safety feature Standard P.O.L. tank connection Left hand thread 160,000 btu/hr Capacity Used with propane fueled indoor and outdoor appliances Excess flow safety feature Standard P.O.L. tank connection Left hand thread 160,000 btu/hr Capacity Used with propane fueled indoor and outdoor appliances