I used 3m Command Strips for adhering the mount to the wall for damage free hanging. I included the parametric Fusion 3d file if desired. The magnets I used are 10.5 x 1.8 mm neodymium disks, feel free to change the size in the model file to suit your needs. Enjoy!
The poster here is 20 x 30 inches, and the picture is one I've taken of Pfeiffer Beach in Big Sur, California.
The author marked this model as their own original creation.