Product Details
The Model 556 is a counter balanced rear flanged vertical mount automatic exhaust double shutter, designed to enable horizontal airflow in one direction while preventing reverse airflow and providing protection from environmental elements when airflow ceases. This unit features blades that open with airflow to minimize wear on the fan motor and close by gravity when the fan shuts down. The counter balanced design allows the shutter to be mounted vertically to 45 degrees, with flanged ends for added weather protection. It is specifically suitable for direct-drive or belt-driven exhaust fans and is not intended for use with vane axial or tube axial fans. Made in the USA, the Model 556 embodies a robust construction that ensures reliability in various operational environments.
