... 0.8mm galvanized sheet,Backboard: 0.8mm galvanized sheet ,3 LED light, Thickness: 4cm HBM-6galvanized + resin letterSurface: Resin,Frame: ... 8mm galvanized sheet,Backboard: 0.8mm galvanized sheet ,3 waterproof LED light, Thickness: 4cm HBM-7stainless + acrylic letter Surface: 0. ... steel,Back: 12mm transparent acrylic,3 waterproof LED light, Thickness: 4cm Update Date:2011-10-12 20:53:58 LED letter sign