🌟 Elevate your ventilation game with style and ease! Crafted from robust counter-balanced aluminum for unmatched durability and strength. Designed to fit your Broan-NuTone 353 and 35316 models with dimensions of 16.75" x 2.75" x 16.75". Flange design ensures a flush fit against your wall, enhancing your home's exterior appeal. Experience superior ventilation with automatic shutters that open and close seamlessly. Enjoy peace of mind with reinforced construction that provides a secure, weather-tight seal. Automatic operation High airflow Durable aluminum The Broan-NuTone 433 Automatic Aluminum Shutter is designed for use with Broan models 353 and 35316 attic ventilators. Measuring 16.75" x 2.75" x 16.75", these high-quality shutters automatically open and close with the fan, ensuring optimal airflow and a sleek appearance. Constructed from durable aluminum, they provide a weather-tight seal and are perfect for both indoor and outdoor use.