Firman Portable Generator, 5500 to 10,000 W Wattage, 120/240 VAC, 50 A, 60 Hz Frequency, 1 ph, 1-Cylinder, 4-Stroke OHV Air Cooled Engine, Engine Specifications: 439 cc Displacement, Electric, Recoil Start, Gasoline, LPG, Natural Gas Fuel, 54.6 cu-ft/hr at Full Load LPG, 101 cu-ft/hr at Full Load Natural Gas Fuel Consumption, 8 gal Tank, 12 hr at 50% Load Run, 72 dB at 75% Load Sound Level, 5 in Caster, Plastic Caster, Dimensions: 26.1 in H x 27.5 in W x 29.8 in D, Includes: Cord, Quick Oil Drain, Tool Kit, Volt Lock Automatic Voltage Regulator