A2 Size LED Slim Crystal Frame Light Box 26.5" x 19.5" Advestising Poster Display Backlit Signage Photo Display Super Slim , only 0.5" is designed for indoor backlit signage applications Tool free graphic change out, and an energy saving, low maintenance design It use 80% less power than fluorescent lightbox energy saving, low maintenance design Diffusion screen , even brightness across the light panel makes the graphics more attractive The acrylic frame beveled edge allow light to extend out to edge creating a "halo effect" images