MasterVision Planning Board Magnetic 2" x 3' Grid Dry Erase, 36" x 48", Whiteboard with Aluminum Frame Magnetic dry erase surface is recommended for frequent use 2" x 3" pale gray grid lines make planning easy and professional looking; 11 columns/11 rows Wallboard with sliding aluminium pen tray keeps pens and magnetic accessories where you want them The Marker Board has a 4-corner mounting system that keeps it firmly in place, and it can be mounted vertically or horizontally 3' x 4' with mounting hardware and marker pen tray included