Counter-balanced aluminum vanes open automatically when ventilator is turned on, close when fan stops
With felt on edges
Detailed Description: Broan Nu-Tone Ventilator automatic shutter is designed to use for cable mount powered attic ventilator and offers more air movement. The counter-balanced aluminum vanes opens automatically when the ventilator is turned on and closes when the fan stops operating. Shutter offers weather-tight closure and is reinforced for strength. The flange has a smooth appearance and suits the flush against outside wall.
|Catalog Description||Automatic Shutter for Models 353 and 35316|