CE/CB Capacitor Run Induction Motor Easy Cleaning Wall Mount Maintain Best Indoor Ventilation and air circulation Blade Size: 6"/150mm 8"/200mm, 10"/250mm, 12"/300mm availble Installation Dimension:  6": 200×200mm;  8": 250mm×250mm;  10": 300×300mm;  12": 350×350mmPower: 24~46wSpeed: 1050~1350RPMNoise: 43~52 dB(A)Air-flow: 258~1080 m3/hCapacitor MotorMetal Shutter (Square Back)Volt/Hz: 220~240v/50~60Hz, 100~120v/50~60Hz

6~12 inch CE/CB Auto shutter Ventilation Fan