This is a stylish Art Deco style cover for your standard cube style tissue boxes.
The decorative panels are printed separately in order to make printing in multiple colors easier. The four panels are all different and each panel is marked with a number of dimples that correspond to dimples on each face of the main body.
You may need to open up the holes slightly if the panels don't click in perfectly. I put a couple dabs of CA on the back of each panel to secure them.