A French cleat is as ingenious as it is simple. It involves securing a strip of wood with a 45 degree bevel to the wall and then securing an opposing beveled strip on the back of a cabinet or anything you want to hang. It’s incredibly strong and versatile and you can make it out of plywood or solid wood scraps you have laying around. It’s a great way to hang cabinetry and as you’ll see in this video, it can be used to make an awesome modular wall storage unit.