For venting 3' or 4' bathroom exhaust fans. Includes 3' and 4' locking plastic flanges for 3' or 4' duct installation. Improved damper design for easier outbound airflow and no back draft from outside air. Black.
For venting 3′ or 4′ bathroom exhaust fans. Includes 3′ and 4′ locking plastic flanges for 3′ or 4′ duct installation. Improved damper design for easier outbound airflow and no back draft from outside air. Black.
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