1.Single-side, brighter and thinner. 2.Aluminium frame, width of frame molding: 35mm (all around the frame) 3.The overall depth of the light box is just 28 mm. 4.Screw frame design, the cover is fixed by screws, durable, hard to destroy.When you want to change picture, you need to loosen the screws, fit for public place. 5.Narrow frame, fit for small light box normally, maximum size is 120*80cm. 6.Work with t5 or led lighting, used for indoor. 7.Thin, transparent and protective front sheet 8.Thin back board for stability 9.Wall mounted. Standard export packing in plywood.