This high efficiency duct fan is a perfect solution for air exhaust system for rooms with high humidity such as bathrooms and kitchen, as well as ventilation for apartments, house, shops, cafes, restaurant, cinemas etc. Features: This high efficiency induct fan blows strong wind offering effective ventilation effect in low noise. Solid copper motor and high quality rotor ensure fast rotating speed and strong wind blowing. Made from premium ABS and PP, the shell and blades are durable and not easy to deform. It is easy to install and use. Just assemble this fan into the air duct and insert the plug to start operating. Perfect for removing damp moist air, odors and airborne pollutants from bathrooms, shower rooms, kitchen, hydroponic room and other internal living spaces without windows or natural ventilation. Specification: Condition: 100% Brand New Material: ABS, PP Color: Shown as Picture Current: 0.22A Rotary Speed: 2200/2550r/min Air Volume: 540m³/h Noise: 48dB(A) Power: 80W Pressure: 300(Pa) Frequency: 50Hz Voltage: 110V Plug Type: US Plug Size: 4in, 6in, 8in(optional) Detailed Size: Shown as Picture Waterproof Grade: IPX4 Weight: Approx.2125g~3535g/75oz~124.7oz Package List: 1 x Inline Duct Fan 1 x Pack of Screws 1 x User Manual. Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.