12" Butterfly Damper - Control Your Airflow on Drop Ceiling grilles of 24x24 (12" Round Duct Opening)

These are airflow control components made to connect to supply grilles of the drop ceiling, the T-Bar vent covers. See our separate listing of T-Bar Supply Grilles. Every part is hand inspected for quality before it is packaged, no exceptions. Heavy Gauge Steel. Heavier gauge than needed, built for durability and long life in mind, but still very thin.