... cover available 2.PC&AL casing material 6W LED bulb&tubeSpecificationModel number:SJ-DG-SMDL-6W Power: 6 ... ,9W,10W,12W,15W,18W,20W,24W,48W2.available in transparent cover , we only made 6W,9W,10W ... 15W,20W,24W,48W ,MCPCB led base board4.available in both transparent and frost cover :9W ,15W , ... .7. Green environment, without any harmful materials listed in RoHS.8. No need maintenance, long life of LEDs ...