Save paper by using a time-tested and reusable writing surface. Black chalkboards are the perfect size for school, office, and home message centers. Works well for handwriting practice, working equations, brainstorming, and more. Rounded corners and smooth edges for safety and comfort. For use with white and color chalk and felt erasers. Hardboard backing is warp and chip resistant. Details: Black surface 18" x 24" x 0.125" 3 chalk boards Adhesive squares included for easy installationFor ages 5 and up