The Grainger 14F540 is a 14-inch diameter, 540 RPM, 115 volt, single phase, open drip proof motor fan. It features a cast iron housing, cast aluminum blade, and sleeve bearings. This motor fan is designed for continuous duty operation and for exhausting applications where particles are present. With a max airflow of 1850 CFM, this motor fan is suitable for workshop, warehouse, and agricultural ventilation needs. The sturdy construction and enclosed fan design allows it to withstand harsh environments while providing reliable cooling and ventilation.