Cooling Fan, Blade Diameter 16 in, Overall Diameter 16 1/4 in, Motor Horsepower 1/4 hp, Motor Speed 2,600 RPM, Motor Enclosure Totally Enclosed, Number of Blades 10, Overall Depth 3 1/4 in, Airflow @ 0.000 in SP 2,170 cfm, Airflow @ 0.125 in SP 1,950 cfm, Full Load Current 18 A, Includes (4) 90 Degrees Mounting Feet, Nylon Tie Kit, Pigtail Connector, Rubber Spacers, Material Nylon, Maximum Ambient Operating Temperature 200 Degrees F, Standards DIN EN 60529, IP68 Electric engine-cooling fan provides higher performance than belt- or clutch-driven fans. Reduces drag for improved fuel economy and horsepower. Provides max. heat transfer during low speeds and engine idle. Sealed fan motor is dust- and waterproof. Fan has concentric retainer rings to keep blades from flattening out at high speed,.