Master Heater B350D 350,000 btu Heater. 350,000 BTU/HR Forced Air Heater with built in thermostat Heating Area Sq. Ft. (8' Ceiling): 8,225* Heating Area Cubic Ft.: 65,600* Heating Work Area (8' Ceiling): 82' x 100' Heating Work Area (10' Ceiling): 66' x 100' Hot Air Flow (CFM): 1,350 Tank Capacity (Gallons): 30 (not for diesel) Consumption (Gallon/Hr.): 2.5 Operation Time/Tankfull (Hours): 11.7 Control System: Solid State Motor (60Hz, Ac, 115v.): 1/3 Hp Ignition System: Continuous Spark Automatic Fuel Shut-Off Built-In Thermostat High Capacity Blower Product Dimensions Including Handle (HxWxL): 31" x 30" x 56" Package Dimensions (HxWxL): 33" x 31" x 58" Unit Weight: 180 lbs. Packaged Weight: 240 lbs. Listed/Certified to UL 733: ARL Not for Diesel Use.