Compact and powerful, the SD series provides high output lumens in an extruded aluminum body. Its unique combination of form, technology and optics allow it to output up to 40% more lumens than similar lights. During manufacturing, each fixture is coated with a ceramic-infused, heat-wicking paint to increase longevity and performance of the LEDs. Quick and easy to install, the SD is designed with the same installer-friendly features incorporated in all RCA lights. The SD series provides evenly dispersed light over a 135Â° area, making it the smart choice for consumer & commercial projects. Available in 4' and 8' 5000k, 0-10v dimmable models.