The old electrical panel was 4 110v household light switches in a steel double recp box, Not very good! ALL the old wiring in the boat has been pulled out and this will be the new panel. The other one here was in the boat but not in use. The hole at the top is for the volt meter, the side holes are for the switches and the bottom is the main shut off. I have an 8 bank sealed fuse box that will mount to the back of the panel. I have easy access the the back without removing the panel.