External Frame Material: Aluminum frame
Size: Customized
Single sided with the thickness of 25mm. 
"Snap-open" aluminum frames for easy graphics changes. 
Energy saving, adopting LED light is 75% power saving compared with traditional lightbox. 
LED lighting, mild and soft which is comfortable for eyes. 
Long life-span, can reach 30, 000hrs, and make sure the light attenuation would be less than 10% in the first 8, 000hrs. 
High-quality evenlit guide plate distributes light evenly, no hot and cold spots
Can be placed ceiling hung. 
CE & UL certificate.