Single-sided, lightweight SMART LED BOX with slim profile design is 3/4 inch (19 mm) in thickness. It is the thinnest lightbox we ever sell. The unit has a built-in on/off switch. Improved LED technology for improved luminance. The specially treated acrylic in the middle provides a homogenous lighting. Pre-treated light guided panel diffuses light even & powerful. Offers evenly diffused lux in all sizes. Snap – open frame for easy poster change. Ideal choice for a wide range of indoor applications: retail point-of-purchase, tradeshow displays, movie theaters, sports facilities, shopping malls, casinos, and more… The Ultra Slim LED Box is extremely durable – it contains no fragile tubes or bulbs, and no glass, making it an ideal choice for highly frequented traffic areas.