WNC1020 Features: High quality generator RPM: 1181 RPM Specifications: Running (rated) kilowatts: 20 kilowatts Starting (surge) kilowatts: 25 kilowatts AC output voltage: 120 / 240 volts 1-phase Dimensions: Dimensions: 26.4'' H X 19.4'' W X 12.3'' D Warranty: Guarantees a 1 year warranty