ENERGY GUIDE Estimated Airflow Yearly Energy Cost 3,628 Cubic Feet Per Minute v * The higher the airflow, the LS | i more air the fan will move Airflow Efficiency 77 Cubic Cost Range of Similar Models (19" 847} Feet Per Minute Per Watt +-Based on 12 cents per kWh and 6.4 hours use per day : Your cost depends on rates and use ยข Energy Use 47 Walls All estimates based on typical use excluding lights fic.