The Mr. Heater Vent - Free Blue Flame Propane 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 a quiet integrated blower for gentle circulation of warm, comfortable air. Oxygen depletion sensors, easy to
read room temperature display and a battery-operated electronic ignition for a quick start. 20,000 BTU model: Heats up
to 600 sq. ft..