This dry erase board features our "goof-proof" dry erase surface with Handwriting Guidelines 3/4" apart etched and locked onto the surface. Turn sideways and you have columns for math work. It also incorporates the decimal point. The board itself is a solid, wood board 1/8" thick. All edges and corners are rounded for safety and durability. Unbeatable Markerboard People quality. Available in our Class Combo Pack which includes student dry erase markers and erasers for each student. Also available in Boards Only class sets.