... acrylic, Frame: 3mm acrylic,Backboard: 3mm acrylic, waterproof LED Thickness: 4cm HBM-2Metal LetterThe whole letter made ... brushed stainless steel,Backboard: 0.8mm galvanized sheet , 3 LED waterproof light , Thickness: 4cm HBM-4Stainless + resin letterSurface: ... stainless steel ,Backboard: 0.8mm galvanized sheet ,3 LED waterproof light, Thickness: 4cmHBM-5galvanized + acrylic letterSurface: 3mm ...