Portable Gas Torpedo Heater Fuel Type Propane Heating Capacity Output 60 000 BtuH Heating Area 1 500 sq ft Minimum Cylinder Size 20 lb Ignition Type Continuous Spark Ignition Power Source Electric Thermostat Included No Overall Height 13 in Overall Width 7 1/2 in Overall Depth 18 in Automatic Safety Shut-Off Included Yes Built-In Air Pressure Gauge Included No Digital Temperature Readout Included No Flame-Out Sensor Included Yes LED Diagnostics Included No