Intellitrac interactive whiteboard mount is designed to mount favorite interactive whiteboard in front of existing chalk or dry erase board. Simply slide it to side, out of way and retain full use of dry erase space. Intellitrac ulilizes very secure and durable dual-track system with rails that attach above and below an existing chalk or dry erase board. It accommodates standard height 48-inch tall existing board with chalk tray up to 58.25-inch maximum.