Large Magnetic Surface The large 30x21 inch magnetic surface provides ample writing space to advertise deals, promote specials, make jokes and more. Perfect for businesses, restaurants and weddings! Includes Eraser and Chalk This elegantly crafted wooden a-frame sign comes with a magnetic eraser and four pieces of white chalk for your convenience. Built to Last With a heavy weight wooden frame, sturdy chalkboard surface, and durable design this sandwich board sign will withstand winds and last for years. Perfect for Indoor and Outdoor Use Designed for both indoor and outdoor use, this rustic sidewalk sign enhances the look of any event or business. Approximately 30 x 21 inches.