Key Features Build to Last: It is mainly made of iron with a spray painting process, making it wear-resistant, corrosion-resistant, rust-resistant, and sturdy. Excellent Performance: This product adopts a powerful brush copper wire motor, which makes the fan speed up to 2600r/min, excellent air delivery(about 220m³/h), and high-efficiency exhaust, providing you with a fresher working environment. Optimized Fan Blades: It optimizes the structure and angle of the 7 metal fan blades, the noise decibel is around 50/60dB, which not only reduces the wind noise but also improves the airflow. Thoughtful Design: The back of the product comes with a check valve design, which can effectively stop flying insects from entering the room. Application The product can be widely used in warehouses, factories, garages, attics, farms, chicken coop welding rooms, workshops, hotels, toilets, kitchens, offices, and so on. Specifications Color: White Model: FD-150 Style: Modern Shape: Square+Round Material: Iron, Metal, Copper Process: Spray Painting Motor Type: Copper Wire Motor Mount Type: Wall-mounted Voltage: 220V, 50Hz Power: 40W Fan Speed: 2600r/min Noise: About 50/60dB Lead Wire Length: About 20cm/ 7.87 in Air Flow Speed: About 220m³/h(For Reference) Air Duct Diameter: 15cm/5.9in Product Size: 19*19*13.5cm/7.5*7.5*5.3in Packaging Size: 20*20*15cm/7.87*7.87*5.9in Gross Weight: 1.4kg/3.08lbs Net Weight: 1.25kg/2.75lbs Package Included 1* Exhaust Fan 1* English Manual Notes 1.Please check the size carefully before ordering. 2.Please read the English manual carefully before installing and using it. 3.Please note that the product requires wiring. This package does not include screws.