My Prusa MK3 is standing in a shelf and because of the restrictions of the shelf space, I had to set it up sideways (with the Y-Axis going left-right). Of course this way I could no longer use the LCD mounted at the front. Instead the LCD was detached from the frame and moved in front (the side) of the printer.
These mounts allow for reusing the original LCD casing as is. You can screw them into the LCD case holders and the floor.