Will accept slabbed cards that are less then 82mm wide, 143mm tall and 9mm deep. The cards just sit in the slot and can easily be changed without having to disassemble anything. Comes in 7 pcs that are slotted together. Can be glued if you choose to, but is not mandatory to function properly. Although you may want to glue the Pokeball parts and bracket. The mounting system is behind the Pokeball. Two screws, or nails, correctly spaced apart and 3+ mm from the wall are all you need.