Breakthrough Technology Delivers Contractors Quick Retrofit to LED Lighting Linear fluorescent lighting may have seen its last days thanks to the inventive, new Cree® UR Series LED Upgrade Kit that can deliver payback in less than two years and makes upgrading to LED lighting simple and easy. Cree, Inc. introduces a 102 lumen-per-watt linear LED upgrade kit to replace fluorescent lamps. The new UR Series is easy to install, saves over 50 percent in energy, provides better light, and lasts up to twice as long as the standard 32-W fluorescent lamps it...