... ,SAA4)lifespans:50000hrsled slim light box(A1,A2,A3,A4)Detail Descriptionl singled-sidedl aluminum frame,width of frame is 40mm,thickness is ... feature of elegent and honorable.4) Snap frame, ConvenientWith a snap-open border on the frame, you can change pictures effortlessly .At ... any questions,please contact us. 2012 new style dimmable led panel light