Generac 7324 18kW Next Generation Series Air Cooled Standby Generator MILW 26059 lights illuminate the work area lights illuminate the work area for increased visibility Capacity: 1 87 gal hr) [10 9 Sound output in dB(A) at 23 ft (7 m) with generator operating at normal load 65 Sound output in dB(A) at 23 ft (7 m) with generator in Quiet Test™ low speed exercise mode 55 Exercise duration Adjustable 5 20 min (5 min factory default) Engine type GENERAC G Force 800 Series Number of cylinders 2 Displacement 817 cc Cylinder block Aluminum w cast iron sleeve Valve arrangement Overhead valve Lifter type Hydraulic Ignition system Solid state Governor system Electronic Compression ratio 9