Here are some lightbox faces we did for Ben-Thai in San Francisco. The red is a custom painted routed out aluminum face and the white is lexan so at night only the white illuminates.

For Live Ramp they needed their light box faces on their light box swapped out. The light box faces are a 4′ x 8′ x 3/16″ thick white acrylic face with translucent digital graphics mounted to the face.