Desk-mounted system transforms your desk into an ergonomic sit-to-stand workstation. Pneumatic height adjustment lets you quickly switch from a seated to standing position. Large platform accommodates monitors up to 20 lb. Wide keyboard tray features a soft wrist support to place your hands in a more comfortable, ergonomic position. Adjustable clamp system securely fits virtually any size desk. Versatile design can be used with a single monitor or dual monitor mount (sold separately).