100mm Bathroom Exhaust Fan with Humidity Sensor, Quiet Window Ventilation Fan, Exhaust Wall Fan with Backdraft Damper, Window Mounting Ring, Temperature-Humidity Sensor for Kitchen and Bathroom.

["IPX4 WATERPROOF: The bathroom exhaust fan is made of high-quality ABS material, the front panel highlights its black color which fits modern industrial home decoration. Ultrahigh waterproof rating of IPX4 to place it where it needs to be moist.","HIGH PERFORMANCE: The bathroom exhaust fan with full copper with ball bearing ensures stable and long-lasting performance. Performance of the 100mm exhaust fan: Power: 12W; Air flow: 95m³/h; Noise: 34dB; Operating voltage: 220 ~ 240V/60 Hz.","100mm COMPATIBLE: The outer diameter is 100mm (4 inches), specially designed for 100mm round duct systems or holes. Ideal replacement exhaust fan for toilet, WC, kitchen, bathroom, office, garage or any rooms where air needs to be exchanged.","Bathroom fan with timer: Exhaust fan comes with a controlled timer with an operation time of 5 to 30 minutes.","BACKDRAFT DAMPER & MOUNTING RING: The package also included a 2-door backdraft damper and a quick mounting ring for window installation. In any case, if you need a ceiling mounting, please remove the backdraft damper of the bathroom exhaust fan to achieve maximum airflow."]