This is a dual light switch face plate and mounting box. It is specifically designed for an Eagle 276W-Box (Two 3-Way Quiet Switches); however, it may work for other switches as well. The model features five small holes at the top for screws and larger holes at the bottom for a drill bit to fit through. You may need to rotate it along the y axis in your printing software to ensure that the face plate is the side that is touching the bed.
To install I used five wood screws and lined them up with the small holes in the top of the model. I then inserted my drill bit through the holes in the bottom and screwed them into the underside of an IKEA LACK table.