The BTF battery box is a very cool looking and safe way to mount your Optima battery. The battery box could be bolted down through 6 laser-cut holes in the bottom of the box or it could be welded to a battery tray. The Optima battery is held in with a clamping action to ensure the battery stays where you put it. It is formed on a from 1/8" high-strength steel plate. Battery clamping hardware is included.