This series of low profile UFO style fixture is specifically designed to provide high output lighting with superior glare-free illumination to improve safety and energy savings in commercial and industrial workspaces, while enhancing productivity and efficiency. The high bay series can be used for a variety of high and low locations such as warehouses, factories, retail stores, and sports arenas. High performance Nichia LED light engines delivering up to 100 lumens per watt. 100W, 120W and 150W LEDs provide 10000, 12000, and 15000 initial delivered lumens repsectively. Custom engineered LED optics provides consistent optical alignment and delivers repeatable photometric performance with 50,000 hour rated lamp life at 70% lumen maintenance. Employing a patented die cast aluminum chassis with integral fins for efficient heat dissipation and long service life, its heat sink construction and the vertical integration of the driver housing carries an IP rating of IP65 which make it less likely to attract dust and dirt, . Available in three beam angle options - 50°, 80°, 120°. Compatible with PWM, 1-10V, resistance dimming.