Mr. Heater Corporation Vent Free Radiant Natural Gas Heater, 20k BTU

The Mr. Heater Vent - Free Radiant Natural Gas Heater. Quick, quiet convection heat! Convenient, easy and safe! Not to mention economical and efficient. It's just the ticket when you need to kill the chill in your ice house, cabin, enclosed porch or that drafty room in your house. No venting or chimney required. Features a thermostat for easy temp control and an optional quiet integrated blower for gentle circulation of warm, comfortable air. Oxygen depletion sensors, a battery-operated electronic ignition for a quick start. 20,000 BTU model: Heats up to 1,000 sq. ft..