MasterVision Planning Board Porcelain Dry Erase Magnetic 1" x 1" Grid, 36" x 48" Whiteboard with Aluminum Frame Magnetic porcelain dry erase surface is recommended for intensive use 1" x 1" pale gray grid lines make planning easy and professional looking; 34 columns/22 rows Sliding aluminum pen tray keeps pens and magnetic accessories where you want them Wallboard with easy 4-corner mounting system, hardware included Clean contemporary look