Description: It has strong ventilation because it upgrade fully closed pure copper motor offers fast fume suction, ventilation, keeping the indoor air clean and comfortable. It has seven thickened blades deliver more powerful and uniform air volume, not easy to deform. It runs stably and vibration-free, ensuring large air volume while reducing noise. It is constructed of iron material. There are several sizes for your choice: 6inch, 4Inch, 7inch. Easy to install, suitable for kitchen, toilet, office, meeting room, restaurant, supermarket, cinema, Internet cafe, workshop, waiting hall, etc. Item Name: Exhaust Fan Material: Iron Features: Bass Noise Cancellation, Strong Wind, Super Suction Voltage: 22V Frequency: 50 Hz Size Details: 4Inch Black, Diameter: 10cm or 3.94 inch (Approx.) 4Inch Black, Length: 7.3cm or 2.87 inch (Approx.) 6inch Black, Diameter: 15cm or 5.91 inch (Approx.) 6inch Black, Length: 15cm or 5.91 inch (Approx.) 7inch Black, Diameter: 18cm or 7.09 inch (Approx.) 7inch Black, Length: 14cm or 5.51 inch (Approx.) 8inch Black, Diameter: 20cm or 7.87 inch (Approx.) 8inch Black, Length: 15cm or 5.9 inch (Approx.) 10inch Black, Diameter: 25cm or 9.84 inch (Approx.) 10inch Black, Length: 15.5cm or 6.1 inch (Approx.) 12inch Black, Diameter: 29.8cm or 11.7 inch (Approx.) 12inch Black, Length: 17cm or 6.69 inch (Approx.)  4Inch White, Diameter: 10cm or 3.94 (Approx.) 4Inch White, Length: 7.3cm or 2.87 (Approx.) 6inch White, Diameter: 15cm or 5.91 (Approx.) 6inch White, Length: 15cm or 5.91 (Approx.) 7inch White, Diameter: 18cm or 7.09 (Approx.) 7inch White, Length: 14cm or 5.51 (Approx.) 8inch White, Diameter: 20cm or 7.87 inch (Approx.) 8inch White, Length: 15cm or 5.9 inch (Approx.) 10inch White, Diameter: 25cm or 9.84 inch (Approx.) 10inch White, Length: 15.5cm or 6.1 inch (Approx.) 12inch White, Diameter: 29.8cm or 11.7 inch (Approx.) 12inch White, Length: 17cm or 6.69 inch (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Exhaust Fan