Custom LED Light-Box Our LED Lightboxes are a quality product of South Korea, UL listed and available in a variety of sizes and colors. Lightboxes are available with variable color temperatures so the light color can be customized for your graphic. Very thin LED Light Boxes | As thin as 5/8s-inch Custom sizes are available from 8×11 through 48×96-inches and in a variety of color temperatures. The thickness of our lightboxes is as little as 5/8s of an inch for some sizes. Delivery of your custom order can be as soon as 10-days. Lightboxes are available in several thicknesses from 0.40 to 1.60-inches.