Repositionable, Static Cling Graph Dry Erase Grid features a dry-erase film that "clings" by static to most smooth, flat surfaces without adhesive! Perfect for use on whiteboards and windows. Repositionable and reusable—leaves no residue behind! 24" wide x 24" high size is ideal for demonstrations or at-the-board work. Rolls up and stores compactly.  Features a black grid with 1" squares emphasized in 5s for easy reading. Bold XY axis. Vertical number line runs from +11 to -11. For use with dry erase markers. .