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This steel cap has a durable black finish, built-in backdraft dampers to prevent uncontrolled air infiltration, as well as bird screens.
- For 3 1/4" x 10" duct.
- Spring-loaded backdraft damper.
- Built-in bird screen.
- Steel baked black enamel finish.
- 24 GA CRCQ Steel, black electrically-bonded epoxy finish