... offices, school, commercial and home. Features and Benefits1).Energy efficient LED panel lights save your money, labor, are more durable than ... hours.2).Environment friendly, no UV, no mercury, no phosphor.3).No flicker, no noise, no glass.4).Super bright ... :CE, RoHS•Optical parametersLuminaire efficiency :>90% Lumen output :5200lm LED efficiency :78 lm/w Color-rendering index :>75Ra Color temperature ...