Save Desk Space: This 26.8" (33" including clamps) x 11" under-desk keyboard tray holds your keyboard, mouse, and other accessories below your desk for added work space. Holds up to 11 lbs and extends a maximum of 8.5" from desk edge --Patent Pending-- Height Adjustable for Ergonomic Typing: Easily slide the tray in and out and enjoy ergonomic typing angles that relieve stress on your wrists and shoulders. The height adjustable tray has 2.4" of total adjustment with 5 set points for customized placement Compatibility: Before purchasing MOUNT-KB05HB, please make sure that your desk surface does not exceed a thickness of 3.4". Note the tray's total length from clamp to clamp is 33", so please make sure you have that much space on your desk before purchasing Sturdy C-Clamps: Attach the keyboard tray to your workstation without causing any damage to your desk (MOUNT-KB05HB: 3.4" Maximum Desk Thickness) with sturdy C-clamps that hold everything tightly in place and are easily adjustable for user convenience Easy Installation: All hardware and instructions are provided for assembly, and mounting your keyboard tray to the desk is an easy process with the adjustable clamps. Please Note: This tray is not compatible with desktops that have beveled edges Enjoy the benefits of ergonomic typing angles and a spacious work area with Black Clamp-on Height Adjustable Keyboard Tray (MOUNT-KB05HB) from VIVO! Win back valuable desk space by adding a lower tier surface for the keyboard, mouse, and other small items. Designed with user-geared features such as smooth gliding motion for easy access, height adjustment for customizable placement, sturdy C-clamps for convenient mounting, and anti-skid padding for scratch resistance, this mount was built to perform! The under-desk tray placement creates an ergonomic setup that decreases fatigue and muscle strain on the neck, back, and shoulders. Add organization and style to your home or office desk with the sleek, black color and modern design. All hardware is provided for easy installation, so you can get your new tray mounted and enjoy comfortable typing angles in no time!