Part of the DADR40 collection Enhanced Vertical Range of 5" to 20" lets you adjust the height up or down for use by people of various heights Adjustable desk riser with keyboard tray gives you the freedom to work in seated or standing posture 40" desk easily accommodates 2 monitors, a laptop, and more Metal frame with easy-grip side handles and gas piston help in raising or lowering weight of up to 40 pounds Keyboard tray extends and retracts while maintaining a distance of 4.5" with the desktop, to facilitate ergonomic arm and wrist position, thereby preventing neck and back pain Grommet hole for to installing monitors and hassle-free cable management Contemporary style desk riser with keyboard tray blends well in modern offices MDF and metal construction is strong and durable No assembly required Monitor arm sold separately