Ook Professional French Cleats - French cleats provide a simple and secure method for hanging pictures, signs, panels and other objects that need support across the length of the object being installed onto a flat surface. They are an efficient means to hang objects and conceal the hanging hardware. To install, attach the mounting bracket to the back of the item to be hung. Then attach the wall bracket with the supplied screws to the location where the item will be hung. Hang mounting bracket on the wall bracket and adjust left or right for desired placement.