1、Sturdy Structure: Engineered with high grade ABS material, our roof exhaust fan is anti aging, anti ultraviolet, and rust resistant. It can easily tackle various outdoor conditions. 2、Easy to Install: Designed for rooftop installation, the exhaust fan comes with accompanying screws for mounting. Moreover, it is equipped with a net that effectively prevents fly from entering the cabin. 3、Dual Speed Control: The vent fan features adjustable dual speed wind settings, enabling you to switch between them with the press of a button, meeting different ventilation needs. 4、High Airflow Capacity: With a high airflow capacity of 200CFM, our exhaust fan can quickly exchange indoor and outdoor air, providing fresh air for your cabin. 5、Universal Compatibility: The ventilation exhaust fan is versatile and suitable for various settings, including marine boat, yacht, RV, trailer, camper, motorhome and more,.