Product Details
The Model 556 is a counter balanced rear flanged vertical mount automatic exhaust shutter, specifically designed to facilitate horizontal airflow in one direction while preventing reverse airflow and providing protection from environmental elements when airflow ceases. It features blades that open with airflow to minimize wear load on the fan motor and close by gravity when the fan is shut down. The counter balanced blades enable the shutter to be mounted vertically up to 45 degrees and include flanged ends for enhanced weather protection. This model is ideal for direct-drive or belt-driven exhaust fans and should not be used with vane axial or tube axial fans. The product is made in the USA and encompasses various technical specifications and compliance standards necessary for its operation.
