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NOTICE: This damper has a light spring and must be mounted vertical with the air flow going up for the damper to close completely.
Made of galvanized steel, these dampers prevent air leakage into your fan setup. They are easy to install, fit directly onto the ducting, and prevent a back draft of air when the fans are switched off.
Item Number: 131960
Universal Product Code: 638104007870
Manufacturer's Part Number: ACBD10