Adjustable desk riser offers a healthy addition to any desk, allowing you to sit or stand while you work. Large, 32" x 20.6" worksurface accommodates two standard monitors or a monitor & a laptop. Retractable keyboard tray slides in & out, rising with the unit. Side lever raises the desk continuously, reaching its maximum vertical range (over 16" above your desk), allowing a comfortable standing position. Gas shock effortlessly enables raising & lowering from sitting to standing. Riser is fully assembled for use right out of the box.