Product Description: Feature: Durable mesh design and protective dense mesh design prevent dirt from entering the machine. Powerful seven-leaf, continuous or regularly ventilated buildings create a good indoor climate. Backflow dampers and end dampers prevent the backflow of polluted air or high-temperature gases and provide good ambient temperature effects. Compared with ordinary axial flow fans, this exhaust fan has low consumption, high efficiency, small vibration, compact structure and beautiful appearance. It has the functions of ventilation, deodorization, dust removal, drainage, etc. It can effectively purify the air, eliminate odors, workshop dust, and water vapor generated by high temperatures in bathrooms and kitchens. Applicable scenarios include bathrooms, shops, offices, conference rooms, hospitals, hotels, etc. Note: When the machine is working, there is slight electromechanical noise, but it is within the acceptable range. Product Parameters: Power: 40W Rated speed: 2800 rpm. Air volume: 500 cubic meters/hour Opening diameter: 150mm. Plate size: 150 (length) × 150 (diameter) mm Voltage: 220V Installation method: wiring Installation location: wall or ceiling installation