VEVOR Drum Fan 24 Inch High Velocity Industrial Use 3-Speed Timer for WarehouseProduct Features Quiet Operation This commercial fan features a high quality motor and wheeled blades that minimize vibration and noise while delivering powerful airflow for efficient ventilation. 3 Speed Settings With three speed options and a maximum airflow of 8700 CFM, this industrial floor fan easily handles dust removal, cooling, and air exchange. 2 Hour Timer The commercial electric fan includes a mechanical timer with infinite adjustment from