Product Details
The Model 502 is an economy rear flanged vertical mount automatic exhaust shutter designed to facilitate horizontal airflow in one direction while preventing reverse airflow and providing protection from environmental elements when airflow ceases. The unit features blades that open with airflow and close by gravity when the fan shuts down, making it ideal for use with direct-drive or belt-driven exhaust fans, but it should not be used with vane axial or tube axial fans. This product is made in the USA and complies with relevant industry standards.
