Strong Ventilation: Upgrade fully closed pure copper motor (speed up to 2800r/min) offers fast fume suction, ventilation, keeping the indoor air fresh and comfortable. Thickened Blades: 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. High Quality: The metal shell with ceramic paint surface is corrosion resistant, dirt resistant, oil resistant, and provides excellent strength and durability. Wide Application: Easy to install, suitable for kitchen, toilet, office, meeting room, restaurant, supermarket, cinema, Internet cafe, workshop, waiting hall, etc. Voltage:110V Standard:US Standard Frequency:50Hz Power:20W / 40W / 50W / 80W / 100W / 120W Standard Air Volume:140m³/h or 600m³/h or 800m³/h or 1050m³/h or 2100m³/h or 3000m³/h Size:4Inch / 6Inch / 7Inch / 8Inch / 10Inch / 12Inch Colour:Black Material:Copper Motor+metal shell Package Contents: 1 x Fuel Pump Control Module 1 x Instructions in Chinese and English Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.