This is an used GENMAX Portable Inverter Generator 5500 GM5500i .        

5000-Watt RV Ready Inverter Generator with Quiet Technology

Our feature-packed power solution includes Quiet Technology,Extended Run Time,Economy Mode and Clean Power.

 ? Fuel Shutoff Feature
? Engine: 4-stroke 312cc OHV
? Fuel Tank : 3.6 Gallon
? Starting Wattage : 5500W
? Running Wattage : 5000W
? Product Dimensions : 24.0"x18.5"x21.1"
? Runtime: 8.5 Hours Half Load Run Time