... LED down light,10W/15W/20W,6 inches hole,LED multi-chips integrated emitter,CRI ... High qualityWith CRI 90 real presentation for true color, which can meet requirement for Museum, Exhibition Hall, stage ... 85% energy and 50% than energy saving lamp.5. Green and cleanCold light source design, non-thermal ... diameter rate of cutting hole 2'', 2.5'', 3'', 4'', 6'', 8'' can replace the traditional down light ...