Wood Framed Green Chalkboard is great for the classroom, office, and home. These chalkboards feature hand crafted wood frames. Measures 18" x 24". For best results, we recommend priming your chalkboard prior to use by taking the side of a chalk stick and rubbing it on the entire surface of the board. Wipe chalk off with a dry cloth and use. A damp microfiber cloth can be used to clean the surface of your board. Do not over saturate. Priming may be required after cleaning."