Step 3: Installing the Cleat at home.
Attach the cleats to the wall and wood. I screw in one screw in to the wall and use a level then screw the other screw in. Ok I know this not the best way, but if fast. When attaching the cleat to the wood you want the cleat to be a few inches from the top the wood. If the wood leans back to the wall you can add a small ¾ piece of ply wood at the bottom and it will sit nicely away from the wall.
I have old plaster walls that can handle the weight of the large piece of wood, but if you have drywall you want to find a stud or use anchors.
I used a piece of wood but the same is true for a cabinet or large scale art work.