ProCom MNSD5TPA Dual Propane/Natural Gas Vent-free Infrared Radiant Wall Heater, 30,000 BTU Not To Be Used in Recreational Vehicle, Ignition:- Electric Piezo Pressure Regulator Setting:- 6" W.C , 30,000 BTU Inlet Gas Pressure* (inches of water):- Maximum 9" Minimum 7" Pressure Regulator Setting:- 10" W.C, BLOWER and BASE NOT INCLUDED & NOT TO BE USED IN Recreational Vehicle