I do not like unmounted power boards. I also dislike keyhole mounting a power board. These mounts allows mounting from the front with screws. It fits the most common sized inexpensive 4-8 outlet boards that are 48mm x 25mm (roughly 1"x2") and if mounted vertical, slightly smaller boards There is a relief cut to be able to use the end outlet. Print with minimal tree supports as in the orientation I have them only the screw eyes need a bit of support.