The Rocelco R DADBR-40 Height-Adjustable Sit-to-Standing Desk Riser offers flexibility to switch between sitting and standing, promoting health and productivity. With a 40" W x 23.6" D work surface, it accommodates up to two large monitors, a laptop and more. The retractable keyboard tray (25.5" W x 11.25" D) is ergonomically positioned 4.5" below the desktop for comfort. The EVR Enhanced Vertical Range adjusts from 5" to 20" to suit users of various heights, with a straight up-and-down motion that minimizes desk depth (23.25"). A gas piston assist allows easy height adjustment up to 40 lb. The grommet hole enables cable management or mounting a monitor arm (not included). For a full standing desk setup, use the optional Deluxe Floor Stand (R DADRB-FS2, not included). Teak wood grain desk riser compliments any modern decor and comes with anti-scratch foam rubber pads, so it can be placed directly on your current work surface and safely keep it from moving around. Fully assembled and ready to use, it's a simple, affordable way to enjoy the health benefits of standing while working.