9 Inch Aluminum Flap Introducing the Exhaust Fan Louver 12" Inch Big Shutter Flapper, a smart and durable solution for your ventilation needs. Crafted with a powder-coated metal body, this exhaust fan louver ensures long-lasting performance and resistance against rust and corrosion. Measuring 12 inches (approximately 30 cm) in size, this louver is designed to fit most standard exhaust fan openings, providing efficient airflow and ventilation. With its sturdy construction and sleek design, the Exhaust Fan Louver not only enhances the functionality of your exhaust system but also adds a touch of modern aesthetics to your space. Whether you're looking to improve indoor air quality or regulate temperature, this exhaust fan louver is an intelligent choice for your home or commercial establishment