I've had a quad fold board printed and am currently designing the vac formed insert that will fit inside the box.The size of the vac forming is 252mm square x 40mm deep.
Are you able to produce custom size box and lid?I've looked into the square box on the game maker but it's slightly too small.
Unfortunately that is as large as we can go using normal processes. We can go bigger but we have to print them using different machines that make the boxes much more expensive ( in the region of £30). If that is ok with you we can make up some templates and add it to the product list.