... warranty,easy install LED wall mounted railway light box 1, size: no limits for this type. 2, frame: optimal aluminum frame, easy ... change 3, thickness: the thickness of this type is only 9mm, just a quarter of traditional light box. 4, high brightness: higher ... is only its one third. 5, light source: use world top class 5630 TV backlight LED (light life is above 50000 hours),can ...