... .Detailed Description: No. Item DescriptionHBM-1Acrylic LetterSurface: 3mm acrylic, Frame: 3mm acrylic,Backboard: 3mm acrylic, waterproof LED Thickness: 4cm HBM-2Metal LetterThe whole letter ... ,Backboard: 0.8mm galvanized sheet ,3 LED waterproof light, Thickness: 4cmHBM-5galvanized + acrylic letterSurface: 3mm acrylic,Frame: 0.8mm galvanized sheet,Backboard ...