Reflective radiant heat with the warmth of the sun. That is the Mr. Heater Portable Radiant Heater in a nutshell. This Radiant 35,000 BTU portable Liquid Propane Heater requires no electricity and is whisper quiet. With factory installed features, like a tip-over safety switch and a thermoelectric safety valve, the only thing you need to make this heater the most useful tool you own is a 20-lb propane tank. Just hook the tank up to the supplied 10-ft hose and regulator, then enjoy the quiet warmth of the MH35LP. Factory-installed tip-over safety switch and a thermoelectric safety valve to protect against accidents 35,000 BTUs per hour to heat a space up to 875 sq. ft. Quiet and odorless for effective use Only requires a 20 lb. propane tank P.O.L. connection with a hose included 1-year limited warranty No electricity required