This Specialty Marker Board features Polar Coordinates permanently fused with the ceramic steel surface making them virtually indestructible when used under normal conditions. The imprinted graphics are UV wear and scratch resistant and because they are fused within the surface they do not interfere with normal marker use. Boards have aluminum trim and full length marker trays with plastic molded end caps both trim and tray have a clear satin anodized finish and have factory applied mounting hangers. Dimensions: 48" W x 48" H.- SKU: AARC2533