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The FANTECH RSK4 Damper is a circular backdraft damper with a 4-inch opening size. Constructed from 24 Gauge G90 steel with a galvanized finish, it features spring-loaded blades for reliable backdraft prevention. Designed for circular ducts, this damper ensures airflow moves in one direction, preventing backflow when the fan is off.
The FANTECH RSK4 damper prevents air from blowing back into the space when the fan is turned off.
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