(See Product Library for more details.) Automatic Voltage Regulator: Quality output for sensitive electronics Electronic Governor: Fast response to changing electrical loads Generac OHVI® V-Twin Industrial Engine: Air-cooled engine designed for generators Longest Life Expectancy in the Industry: Over 3,000 hours of run time Full Pressure Lubrication: Continuous lubrication of all vital engine parts Spin-on Oil Filter: Automotive style for easy maintenance and prolonged engine life 16 Gallon Fuel Tank Air Cooled Automatic Idle Control Electric Start - Quick start 50-amp High Power Outlet, Twistlock Plug, plus GFCI Protected Duplex Outlets 10-Hour Run-time at 1/2 Load Wheel Kit and Heavy Duty Lifting Eye 13" All-Terrain Tires Rated Power (watts): 15,000 Surge Watts: 22,500 Rated Amps @ 60 Hz 120/240, 1 phase, 1.0 pf: 62.5 Engine: GT990 Engine RPM: 3600 Engine Cooling: Air Fuel Capacity (gasoline) gallons: 16 Dimensions (L" x W" x H") including frame: 39 x 31 x 49 Unit Weight (lbs.): 450