Electric Fan with High Torque, Low Amperage Draw Motor. the Motor Rides On Dual Ball Bearings. Reversible Fan Blades Engineered to Provide Maximum Airflow. Our Fans Provide More Efficient Cooling At Low Speeds Where It Is Needed Most. This Fan Moves 1800 CFM Of Air At 2100 RPM. 14-3/4 In High X 14 In Wide 3-1/2 In Deep. The Fan Has 10 Fins.