I'm sorry I didn't get back to you sooner, but thank you for doing such a wonderful job with my box. It was worth the wait!
I have two basic designs for boxes. Your custom box could be made using either of the two designs below.
1. Interior and exterior wall box (can be any size)
2. Panel with edge box (starting at 12 x 10 x 3 interior inches in size) This starting size holds a 8-1/2 x 11 sheet of paper.
This panel design is something I created for the larger boxes.