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• 4in Ventilation Fan Noiseless Wall Mounted Exhaust Fan with Large Air Volume for Kitchen Use Feature:1. Adopting diagonal flow supercharging technology, high‑efficiency internal rotor motor, vast air volume, high efficiency and low calories consumption. 2. The inside double ball bearings are product of very best supplies and feature an extended carrier life. 3. Using dense natural copper coils, the conductivity coefficient is greater and the loss is smaller. 4. With greater air stress of the exhaust fan, the air supply can be as a lot as 10 meters, offering you with a reputable kitchen environment. 5. The noise is low and does not affect paintings and life. If it's put in separated from the ceiling, the noise could also be lower. Specification:Item Type: Ventilation Fan Material: ABS Weight: Approx. 1348g / 47 Color: White Power: high speed to35W / low velocity to 20W Air Volume: (high) 170m³/h / (low) 133 m³/h Wind Pressure: (high) 125pa / (low) 105pa Speed: (high) 2600r/min / (low) 2100 r/min Noise: (high) 31dB / (low) 26dB How to Use: 1. Installation: A. Remove its middle field in protecting with the instructions, and reveal the set up base; B. Use screws and expansion stoppers to repair the base; C. Connect the left and right ends to the pipe; D. Install the middle box. 2. Power twine connection: This product can be linked to the governor, timer and delayer. Open the ability disguise on the middle field of the most important unit, and attach the power twine in protecting with the instructions. Package List:1 x Ventilation Fan4 x Screw4 x Expansion Screw1 x Manual Note:Please confirm the wind direction when the mechanical device is working before installing!

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