Agricultural Exhaust Fan Assembled Unassembled Blade Diameter 48 in Blade Material Steel Frame Material Steel For Maximum Motor Horsepower 1 hp For Maximum Motor Speed 1 725 RPM For Minimum Motor Horsepower 1 hp For Minimum Motor Speed 525 RPM Maximum Airflow 19 608 cfm Maximum Static Pressure 0.3 in wg Minimum Airflow 19 000 cfm For Cut-Out Height 53 in For Cut-Out Width 53 in Guard Type Intake Number of Blades 3 Includes Motor No Overall Depth 17 in Overall Height 52 1/8 in