The new EDUPanel LED features an ultra slim design, dimmable LED technology, convenient ON/OFF switch, and a 50,000 hour LED life span. �The bright, illuminated background is perfect for lighting items from beneath and works well with transparent and translucent materials. �This portable panel adds excitement and illumination to various STEM related topics including patterning, shapes, geometry, colour exploration, optics, opacity, transparency, tracing, stenciling and more. �Frame size 19-1/2" x 26-1/4", illuminatd area 17" x 24". Low voltage AC power adapter included.