ENERGY GUIDE Estimated Airflow Yearly Energy Cost 2697 Cubic Feet Per Minute $11 * The higher the airflow, the $ i r$ more air the fan will move 3 34 © Airflow Efficiency: 69 Cubic Cost Range of Similar Models (19" 84") Feet Per Minute Per Watt 1 Based on 12 cents per kWh and 6.