Features: Material:The exhaust fan is made of thickened metal and is integrally formed. The fan's safety net cover has high density good hardness and is sturdy and durable. Strong Wind Force: The exhaust fan has a high speed and strong wind force. Double ball bearings provide strong smoke exhaust. Low Noise Design: The exhaust fan has wide angle smoking making low noise when you cook. Integrated design for easy installation. Seven Blades: The seven blades can increase the exhaust air volume relieve the traction of various parts of the blades during high-speed operation and ensure stable air volume during high-speed operation. After-sales Service: If you have any problem please contact us immediately we will help you solve it as soon as possible. Specifications: Material: Metal Size(inch) Hole Diameter(mm) Length(mm) Diameter(mm) Voltage(V) Frequency(Hz) Power(W) 6 150-160 150 150 220 50 40 7 180-190 140 180 220 50 50 8 200-210 150 200 220 50 60 Notes: Please note that due to the influence of light and screen slight chromatic aberration is acceptable. Please allow slight measurement error due to manual measurement. includes: 1 *Exhaust Fan 1 * Base