Type:Solid Wood Boards Timber Type:Birch Graphing Board, green, movable, marine plywood Dimensions: 1.2 meters x 1 meter Minimum board thickness: 12.5mm The grid horizontal and vertical lines are etched and colored yellow visible at far side in the classroom. Grid horizontal lines spacing: 20mm Grid vertical lines spacing: 20mm With aluminum side frame. With legs and caster wheels for easy movement from one place to another. Show More