These Commercial Wall Exhaust Fans are an industrial grade with self closing louvers which prevent reverse airflow. It comes with Gravity Shutters and is suitable for industrial, commercial or domestic applications. It can be used to extract heat, air or dust or to ventilate a space such as a factory or garage. The fan is designed to extract large volumes of air with a relatively low noise.
These commercial wall exhaust fans are easy to install and comes with a 240v motor ready to be hardwired by an electrician.
The image to the right shows the fan from the side and with its louvers shut. As you can see, the fan comes with a cage which covers the blade.