FIRMAN DUAL FUEL INVERTER 3200/2900W ELECT Inverter; Electric Start; 171 CC/ OHV/ Air Cooled/ 4-Stroke Single Cylinder Engine; Gasoline/ Liquid Propane Gas/ 1.8 Gallon Fuel Tank; Gasoline 3300 Watt Starting/ 3000 Watt Running/ Liquid Propane Gas 3000 Watt Starting/ 2700 Watt Running; 120 Volt AC; 20/ 30 Amp AC Rating; Runtime At 25 Percent Load 9 Hour/ Noise Level 63 Decibels; Portable; 104 Pound Weight; 28.7 Inch Length x 18.9 Inch Width