Save paper by using this time tested and reusable writing surface. Black chalk boards are the perfect size for school, office and home message centers. The board works well for handwriting practice, working equations, brainstorming, and more. The rounded corners and smooth edges are for safety and comfort. Details:Black24" x 36" x 0.125"Sized to be handled easilyFor use with white and color chalk, and felt erasersHardboard backing is warp and chip resistantComes with adhesive squares for mounting