This underdesk keyboard tray adds convenience and comfort to your setup by reclaiming valuable desk space The curved edge of the keyboard tray is ergonomically designed for comfortSpacious and Sturdy DesignThe ample surface of the keyboard tray measuring 276 x 122 in 700 x 310 mm provides enough room for a fullsize keyboard mouse and wrist rest In addition the tray has a weight capacity of 265 lb 12 kg which establishes a steady platform for typing and can extend up to 85 in 216 mm from the edge of the deskSimple to Use and Install The keyboard tray has rails that enable it to slide in and out from under the desk effortlessly Once assembled the desk clamps are installed by hand and support desks with a thickness up to 23 in 584 mm The antislip pads provide a firm attachment to the desk while protecting the surface of the desk Adjust the height of the tray to one of the three available settings 39 47 or 55 in 100 120 or 140 mm respectively One of the three settings will ensure proper clearance between you and the tray while providing the ideal height for an ergonomic workspace The desk clamps occupy minimal desk surface space only 18 x 25 in 47 x 64 mm per clampThe KEYBOARDTRAYCLAMP1 is backed for 2years by StarTechcom including free lifetime 245 multilingual technical assistance