To use high transparent protection sheet with magnet adsorption light-guide, You could open it from the front side and change the photo. LED light-guide is with excellent uniformity without the dark shadow like traditional light-box. Don't worry brightness decrease after long time power on.  The power consumption of LED light-box is only 50% of the traditional light-box.
There are three standard items for options.

Light-box specification:
Outline dimension:520x760x15 mm (WxHxD)
Power Consumption:23W
Material: aluminum, acrylic
Frame color: silver / black
Input voltage: 110/220 V
Output voltage: 12V