Recessed wainscoting is the process of adding flat pieces of trim to your existing walls to create a 3D or recessed look to your walls. They are normally comprised of a flat top rail, a bottom rail and vertical pieces known as stiles. The size of the stiles are determined by the customer. some choose to only accent the bottom of their walls while others choose to do full wall designs. You can even be creative and create multiple vertical and horizontal squares.