JIONET 4 Inch Extractor Fan 110V Window Cooling Fan Inline Hydroponic Air Blower Exhaust Fan 118CFM Through Wall for Home Bathroom Grow Room Ventilation Vent (Size : White)

【VENTILATION FAN with CHECK VALVE and SLIM DESIGN】This 4” air duct vent has check valve. You can keep air reversible or exhausting cooking odors by your request. When the airflow stops, it can be closed by spring automatically. And if you don’t need 【HIGH AIR FLOW EXHAUST FAN】Diameter: 95mm (fits 100mm pipe); Airflow: 118 CFM, power: 20W, voltage: 110V, frequency: 60Hz, speed :2800r/ min，Noise: 40db，Air volume: 200m3/h 【EASY TO INSTALL】Suitable for wall or ceiling installation. The exhaust fan is recommended to fix with glue or screws.Convenient to clean, you can remove the motor by unscrewing the four-corner screws. The detachable design is convenient for 【OVERHEAT PROTECTION】Adopting an Axial Pipe Fan, Stronger Wind Design, Effectively Reduce Heat Generation, Can Realizes Optimal Cooling Effect.Built-in Overheating Protection Device Cuts off the Contacts when the Motor is Overheated, Which Plays a 【EXHAUST FANS】This Bathroom Exhaust Fan is an Ideal Choice for Creating Efficient Indoor HVAC System Among Kitchens, Bedrooms, Offices, Basements, Warehouses, Garage and Other Areas That Require Continuous or Regular Ventilation