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Introducing the Dayton Backdraft Damper / Wall Shutter - the ideal solution for ventilation and smoke control in commercial and residential settings! With its durable galvanized steel frame and tie rods, this shutter is designed to handle tough environments while providing peace of mind. The 12-inch size makes it perfect for a wide range of fan applications, while the felted aluminum louvers ensure quiet operation. Easy installation with 9/32 inch x 1/2 inch mounting holes make this product a must-have for any ventilation system. Keep your space well-ventilated and protected from smoke and odors with Dayton's Backdraft Damper / Wall Shutter!