... -chips integrated emitter for high luminance>80Lm/W.LED ceiling light is distributed evenly,CRI>80. 10W/15W/20W LED Ceiling ... bright semiconductor chip independence device packaging High-power LED as light source, luminous efficiency is more than 100Lm/W, much higher ... .5'', 3'', 4'', 6'', 8'' can replace the traditional down light directly, unnecessary to cut new hole for the fitting.Specification ...