The Master MH-140T-KFA is a portable, commercial-grade forced-air torpedo heater delivering 140,000 BTU/hr of heat at 540 CFM of airflow to warm well-ventilated spaces up to 3,500 square feet. CSA-certified for multi-fuel operation with K-1 kerosene, #1 and #2 diesel, it features a 10-gallon fuel tank that provides roughly 9 hours of runtime at a consumption rate of 1.0 to 1.1 gallons per hour. Operating on a 120V AC power supply.