Do-it-Yourself Frameless Dry-erase Magnetic Glass Board is part of a customizable board system that lets you mix & match your board surfaces to suit your needs. Four brackets on the back let you hook it into the channels of the Do-it-Yourself Board Aluminum Frame (not included) that you mount to your wall with screws. The frame stays on the wall, but lets you replace a cork & / or felt panel with this 4mm thick glass board you can easily write notes & messages or even attach them to the board with magnets (not included).