Compact Yet Powerful: The low noise 24 in shutter fan delivers impressive airflow at 3500 CFM, with a power rating of 150W and a speed of 1500 RPM, making it perfect for small to medium spaces while fitting seamlessly in any 24 in design Automatic Protection Design: Equipped with an automatic self-closing protection feature, this quiet 24 in shutter exhaust fan opens and closes automatically with the fan's operation, extending the motor's lifespan during winter's downtime Built to Last: Constructed with high-grade aluminum blades, the durable 24 in exhaust fan resists humidity and high temperatures, ensuring reliable performance and preventing corrosive rust, making it perfect for garage use Easy Installation: As a fully assembled 24 in wall mounted shutter fan, installation is effortless—simply mount the frame on the wall, connect the power cord, and enjoy immediate ventilation in your workspace Multi- Purpose: This energy efficient 24 in exhaust fan circulates air effectively to reduce indoor temperatures and improve air quality, making it suitable for home attic, workshops, welding rooms, factories, warehouses, barns, and greenhouses