Yaham Lumiway 3 series (300W/400W/600W/900W) LED high mast lights feature a scalable architecture with modular configurations that accommodate up to 18 LED light engines. The highest power Lumiway 3 luminaire produces a lumen output of 99,000 lm that effectively replaces applications formerly using 2000W HID lamps. With significantly less electricity consumption and an extended operation life that virtually eliminates ongoing maintenance expenses, the Yaham Lumiway 3 family is the perfect area lighting solution for both full-cutoff needs or landmark applications such as roadway interchanges, parking lots, rail yards, loading docks, and building perimeters where a highly economical and visible light source is desired. Lumiway 3 series incorporates cutting edge Nichia LED technology along with proprietary PC optics and excellent thermal management to achieve a combination of horizontal and vertical illumination outperforming other lighting products in its class. The Lumiway 3 LED high mast light incorporates a heavy duty aluminum heat sink providing efficient and effective thermal transfer through air convection and conduction for the modular LED engines. The thermally efficient design and IP65 fixture integrity enable Lumiway 3's critical component - LEDs, driver, and control circuits to perform reliably in ambient temperatures from -40°C to 55°C over its long rated life.