The Cool Boss by BendPak CB-20HVLS industrial ceiling fan helps large shops achieve year-round comfort, maximize energy savings, and boost productivity. The 20-ft. diameter fan is quiet and built to last with high-strength aluminum alloy blades. Winglets on the blade ends improve aerodynamic performance, increase airflow, and reduce turbulence to maximize energy efficiency. Like all Cool Boss high-volume, low-speed fans, the CB-20HVLS uses a high-efficiency brushless permanent magnet synchronous motor to deliver more torque with up to 50% less energy consumption than traditional AC motors. The motors also offer greater reliability, reduced maintenance and longer service life.