The height adjustable Fellowes Office Suites Deluxe Keyboard Drawer offers exceptional comfort and support while you work! Moves keyboard and mouse off the desktop to save workspace. Unit is easy to install and offers three different height adjustments to suit preferred work position. Mouse tray mounts on right or left side of keyboard tray or stows underneath keyboard tray when not in use. Mouse rest is adjustable to 2.5", 1.75", or 1.25" below. Features soothing Memory Foam wrist support on keyboard tray for added comfort. Ball-bearing glide tracks ensure smooth drawer movement. Keyboard stopper holds keyboard securely in place while you work.