Broan® Automatic Shutter
Allows more air movement than conventional stationary attic louversCounter-balanced aluminum vanes open automatically when ventilator is turned on, close when fan stopsFlange fits flush against outside wall for neat, smooth appearanceReinforced for strength; provides weather tight closureUse with Models 353 and 35316 - sold separately
Additional Features
- Allows more air movement than conventional stationary attic louvers.
- Counter-balanced aluminum vanes open automatically when ventilator is turned on, close when fan stops.
- Flange fits flush against outside wall for neat, smooth appearance.
- Reinforced for strength; provides weather tight closure.