A smaller, more economical Polar Coordinate dry erase board exclusively from OptiMA® Graphics. These are our best quality, magnetic dry erase boards with an imprint of a Polar Coordinate grid but they are in a size of 32" x 45½" instead of the traditional 4' x 4'. That means that these boards can ship to you much more economically by UPS. No other company offers a permanently imprinted magnetic polar coordinate grid board that can ship by UPS. That can save you up to $100 just for shipping not to mention that the board is anywhere from 25-35% cheaper! These smaller polar coordinate boards are made with our exclusive OptiPrint® method. That means that you still get the best dry erase writing surfaces in the world where the board erases clean and the print will never wear off. Each coordinate board comes with a satin anodized aluminum trim, full-length marker tray and installation hardware. Why pay the expense of buying a 4' x 4' board that has to ship by truck when you can purchase our slightly smaller 32" tall x 45½" wide board instead for about 25-35% less and ship it by UPS? Tip: It is not recommended to clean these boards with anything containing ammonia which is found in most glass cleaners.