Machine description: T4 FINAL ENGINE, 1800 MAX RPM, STANDBY HP 23.4, 189 GAL FUEL TANK, 32.8 HR RUN TIME, 60 HZ GENERATOR FREQUENCY, 800000 BTU, 180 DEGREE MAX OUTPUT TEMP, SINGLE STAGE BURNER, 3900 CFM AIR FLOW, 4990 LBS... more info about the 2019 Mac 800G.