4 Inch Exhaust Fan, 130 130mm Wall Mounted Ventilation Fan, Suitable for Ceiling, Bathroom, Attic, Window, Basement, Ventilation Fan, 220V 20W

[Exhaust Fan] This bathroom exhaust fan is ideal for creating an efficient indoor HVAC system in kitchens, bedrooms, offices, basements, warehouses, garages and other rooms requiring constant or periodic ventilation. [Stable and durable] Made of high-quality metal with a polished finish, resistant to corrosion and scratches, this exhaust fan is equipped with an automatic shut-off valve to prevent the suction of foreign objects. [High Quality Motor] This wall and ceiling exhaust fan uses a brushless motor with a double ball bearing outer rotor, ensuring efficient, quiet operation and high-quality performance. Compared to standard motors, this improved motor reduces friction, saving energy and extending the life of the device.[Overheat Protection] With a powerfully designed axial flow ducted fan, it effectively reduces heat generation for optimal cooling. An integrated overheating protection device disconnects the motor contacts in the event of overheating, providing protection against power outages.