Description
Opening/closing damper prevents outside elements from entering the vent. Damper is spring loaded to keep damper closed when not in use. For 3-1/4′ x 10′ duct. Damper spring controlled. Aluminum. Mill finish.
Opening/closing damper prevents outside elements from entering the vent. Damper is spring loaded to keep damper closed when not in use. For 3-1/4′ x 10′ duct. Damper spring controlled. Aluminum. Mill finish.
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