... outdoor both can be used. 3.LED back light source. LED Super Large Light Box 1, size: no limits for this ... this type is only 9mm, just a quarter of traditional light box. 4, high brightness: higher brightness 60% than ... T8 tube light box, but the weight is only its one third. 5, light source: use world top ... class 5828 TV backlight LED (light life is above 50000 hours),can be used 5 ...