An OptiMA® exclusive! 5' tall x 6' wide, magnetic dry erase boards with permanent horizontal lines. Now you can have 25% more writing space on our Great White® Signature Series™ 5' tall magnetic dry erase boards with horizontal lines. The horizontal lines are printed onto the board with either 1" or 2" between each line and then covered with an exclusive clear dry erase material to protect the lines indefinitely. They won't rub or flake off. Our exclusive clear dry erase coating is one of the best dry erase writing surfaces available on the market today and the surface erases clean every time. You can select from 1" or 2" tall rows. You can also select your rows to be solid white or select rows that alternate from a very light gray shading in one row to solid white in the next. These alternating colored rows are called variegated. Many customers prefer variegated or alternating colored rows feeling that the rows are easier to follow when tracking across the board. The boards are 5' tall x 6' wide with a satin anodized aluminum trim and a full length, aluminum marker tray. The horizontal lines are available in 1" or 2" spacing. Tip: It is not recommended to clean these boards with anything containing ammonia which is found in most glass cleaners.