PuzzleBoard 24V-ST is a very thin LED light board series which is designed for back-lighting/advertising-lighting application. With its 6 different panel sizes, all kinds of different size lighting area can be composed by using different panel of PuzzleBoard 24V-ST. With its thin thickness, uniform light output, and easy-installation, PuzzleBoard 24V-ST can always be a good fit to all kinds of back lighting application.