holds business cards in the front, 4x6 post cards in the middle and trifold brochures in the back. great for a store front, trade shows, etc. in the tiny spot on each front corner you can customize with an embossed business logo. note: i mostly model in inches so if you have trouble with your slicer then convert to metric or scale by 25.4modeled in rhino3d. file is clean and printable. base is 8"x6" so be sure your printer is big enough. base is hollowed out so you dont waste a ton of plastic. enable support material in your slicer for the hollowed bottom.