Do-it-Yourself Frameless Corkboard is part of a customizable board system that lets you mix and 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 glass and/or felt panel with this 12mm thick felt board made with medium-density fiberboard. The brown cork lets you tack messages and reminders.Do-it-Yourself Frameless Corkboard is part of a customizable board system that lets you mix and 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 glass and/or felt panel with this 12mm thick felt board made with medium-density fiberboard. The brown cork lets you tack messages and reminders.