Generac® Standby Generator, 120/240 V, 100 A, 108 A, 26 kW, 3600 rpm Rotational Speed, 60 Hz, 1 ph, G-Force 1000 Series Engine, 67 dBA Noise Level, 1 Power Factor, 2 Cylinders, Compression Ratio: 10.1:1, 997 cc Displacement, Governor System: Electronic, Solid State Ignition System, 144 cfh Liquid Propane, 316 cfh Natural Gas Fuel Consumption, Liquid Propane, Natural Gas Fuel, 46.4 in L x 26.3 in W x 30.7 in H