Portable Gas Torpedo Heater Fuel Type Propane Heating Capacity Output 60 000 BtuH Heating Area 1 350 sq ft Minimum Cylinder Size 20 lb Ignition Type Continuous Spark Ignition Power Source Electric Thermostat Included Unit-Mounted Overall Height 13 1/2 in Overall Width 8 7/16 in Overall Depth 19 19/64 in Automatic Safety Shut-Off Included Yes Built-In Air Pressure Gauge Included Yes Digital Temperature Readout Included No Flame-Out Sensor Included No LED Diagnostics Included No