Pick 1 or 2 mm depending on how much give there is between the covers
i mounted using gorilla glue tape, and seems to hold strong if covered well. small screw hole provided if needed
2 mounts in the bottom corners will hold up games on their own, but will be more sturdy and sit better to the wall if you add at least one to the top.
I used two 2mm for the bottom and one 1mm for one corner at the top to keep things fluch with the wall
unfortunately some games have too tight of a seal and probably would damage the box using this in the cover, might be a better option to have outside instead of in-between
definitely recommended for lighter games, i don't think you will putting Gloomhaven on the wall with theses :)
will look at making taller or shorter versions if wanted, this 50mm version seems to cover a broad array of mainstream games
The author marked this model as their own original creation.