Outlet Box Plate Cover Pr-punched. "Universal" design with plastic coating on exposed side, can be painted with oil or latent based paints. Outlet Box Plate 1. Position plate over outlet box and locate mounting screw hole position on plate and mark exact location In plastic coating. With a sharp tool, pierce the plastic coating in the exact position of mounting screws. If mounting holes are in a knock-out location, knock-outs should be removed only by punching through the mounting hole location.
