OptiMA® 4' tall x 6' wide, magnetic dry erase boards with permanent horizontal lines created with the OptiPrint® method. 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. Since the boards already have the permanent horizontal lines you can create your own large custom changeable magnetic planning or scheduling boards using our colored vinyl chart tape. Create as many vertical columns or lines as you need. This gives you the flexibility to make short or wide column widths. If you need to change the width of a column later, simply remove the vinyl chart tape and start over. The boards are 4' 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.