Features: Material:The exhaust fan is made of thickened metal and is integrally formed. The fan& 39;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. 1 *Exhaust Fan 1 * Base