The ZR-FD high efficiency series is a commercial spec-grade LED troffer delivering superior energy efficiency of up to 130 lumens per watt for maximum energy savings. But stellar lumen-per-watt performance is just the beginning: the ZR-FD High Efficiency Series also provides a matte finished housing for less glare and better light distribution, standard 0 to 10V dimming to 5 percent and 80 Plus CRI - all in a package with a price as attractive as it looks.