AKT180LE is designed for flexibility and comfort. Easily adjust your keyboard and mouse to your correct ergonomic position and work in comfort with the help of a 3M keyboard tray.Lever-free lift and lock mechanism enables easy height adjustment. And the unique sit/stand feature allows for more variation in work positions, helping to reduce the chance for repetitive stress injuries. Compatible with ergonomic keyboards. Intended for corner workstations or straight-on workstations that accept a 23in. track. 3M Sit/Stand Adjustable Keyboard Tray is one of many Keyboard Managers & Drawers available through Office Depot. Made by 3M.