The GORK is a low-cost LED retrofit for prismatic troffers that delivers over 104 lumens per watt, and can be installed in just five minutes. Long-life, 60,000 hour LEDs at L80 reduce life cycle maintenance costs. Four LED color choices and 80 CRI. Available in 2x2 and 2x4 configurations. Lumen packages ranging 1400 ?9760 lumens (Typical delivered lumens from lensed troffer). Efficacy up to145 LPW.