Details: Get more active and productive by giving yourself the option to now stand at your existing desk. Large surface area accommodates all your desktop items including monitors, a keyboard, a mouse and documents. Smooth lifting and height adjustable up to 20". Two-tiered surface puts your keyboard lower where you need it. Notched back can accommodate most standard monitor arm kits. Smart ergonomic design lifts and lowers within the same plane on your desk surface, so you do not need to step back and away in standing position. Durable steel base construction for long-lasting performance. Non-skid silicone pads protect your work surface from scuffs and scratches. High-quality top surface is water- and dent-resistant. Ready out of the box so no installation required.