This multi-purpose lightbox is 3/8" thick and features dimmable LEDs that provide an even spread of light from edge-to-edge. It features a built-in ruler grid and is ideal for tracing, calligraphy, stenciling, embossing, quilting, embroidery, sewing and more.Details:Wafer #217" x 12.6" illuminated area19" x 14" overall height8 mm thickLED lightingPowered by an AC adapter