... ,15000 square meter factory DC Brushless Cooling Fan(Brushless DC Fan, DC Fan, Brushless Fan,cooling Fan,cooler,Blower Fan) (40x40x10,40x40x15,40x40x20,50x50x10,60x60x15,60x60x20 ... (mm)ModelVoltage(V DC)Current(AMP)Power (Watts)Speed(RPM)Air Flow(CFM/CMM)Pressure(mmH2O)Noise(dBA)Weight(g) 40x40x10FD40 ...