Broan 433 Automatic Shutter for 353 and 35316 Gable Mount Attic Ventilator

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Feature

HIGH-QUALITY SHUTTERS: Automatic shutters for your Broan-NuTone 353 and 35316 models allow more air flow than conventional stationary attic louvers
AUTOMATIC: Shutters automatically open when fan is operating and close when the fan shuts off for hassle-free use
DURABLE: Constructed of durable, counter-balanced aluminum for reinforced strength
ATTRACTIVE: Flange fits flush against outside wall for a neat and smooth appearance
IDEAL SIZE: Shutters measure 16.75" x 2.75" x 16.75", perfect for your home
For use with Broan models 353 and 35316 attic ventilators
Allows more air movement than conventional stationary attic louvers
Counter-balanced aluminum vanes open automatically when ventilator is turned on and close when fan stops
Flange fits flush against outside wall for neat and smooth appearance
Reinforced for strength and provides weather tight closure