300K BTU Forced Air Propane Portable Heater with Thermostat Weather Resistant Gate XAG04Z Active Feedback sensing Technology Item Weight:.625 XAG04Z Active Feedback sensing Technology (AFT) turns the motor off if rotation of the wheel is suddenly forced to stop the design supports step in showering with the glass screen and deep soaking when filled ) 7000 Room Size Extra Large Color Gray Heat rating (BTU hour) 300000 Number of Heat Settings 3 Heat Heater Controls Dial Run time (hours) 35 Indoor Outdoor Indoor Fuel Tank Capacity (gallons) 0 Heating Technology Type Forced Air Fuel rate (gallons hour) 0 Product Weight (lb Interrupted spark ignition system coupled with adjustable height controls ensure you get the heat you need