Shown in the picture is the Martha Stewart score board and the 3D printed mounts created to store it attached to the side of my desk drawers with 3M Command Picture Hanging Velcro Strips. The mounts can be spaced however far apart you need, depending on your specific score board, in your desired location; ie. wall, desk leg, filing cabinet, etc.

The width of the opening is just under 1". The height of the front plate is approximately 3 ½". This height is sufficient to hold the board upright, and the width of the opening also allows me to also store my smaller score board on it's side directly in front of it.