Parameter: Voltage120V, 220-240V Frequency50 /60Hz Rated Input Power350 W Max Power420 WMax Vacuum ≥15 KPa≥60 in H2OMax Air Flow ≥24L/s≥50.4 CFM Max Air Power≥140 W Max Efficiency≥37% Performance date above are for reference only.Individual performance data may vary due to normal manufacturing variations. Youare welcome to give us any of your special requests.