... YB series motor, its power cant be 220V).Exhasut fan,Volume:110~2250m3/h,Pressure:67~2343Pa,Weight:12 ... Conformed to the prescription of GB11799-89 MARINE EXPLOSION-PROOF FAN TESTING, TECHNIC DEMAND, CHECK AND ACCEPT.2.2. ... and impact.Centrifugal fan,Ventilation fan,Centrifugal ventilator,Ventilating fan,Exhaust fan,Air blower,Centrifugal blower,Wind blower,Marine fan,Marine blower,Marine ventilation ...