DC fan, YHWF-74 set is driven by brushless DC motor and change direction electrically depending on Holl unit. has long life and low noise, is manily used in heat dispersion of induction cooker. Electric parameters: ModelRated VoltageOperation VoltageRated CurrentRated SpeedAir SpeedStatic PressureNoiseBering System(V)(V)(A)(RPM)(CFM)(mmH2O)(dBA)YHWF-74L1210.213.80.13250026.621.9327SleeveYHWF-74M1513.216.80.14300030.672.2429SleeveYHWF-74H1816.219.80.17350038.223.6133Sleeve