CADR-46 Height-Adjustable Corner Sit-to-Stand Desk Riser lets you enjoy the benefits of a standing desk with the space-saving design of a corner desk. It sits directly on your current desk so you can sit and stand to become healthier and more productive. Worksurface measures 45-1/2" wide x 23-1/4" deep to fit on corner desks and holds two large monitors or a laptop (none included). It keeps your monitors at the proper height to prevent neck strain. Extendable, ergonomic keyboard tray measures 40" wide x 13" deep. Height adjusts up to 18" and down to 5" for ergonomic positioning for people of all heights. Gas piston assist and convenient side handles let you raise and lower up monitors up to 40 lb. Grommet lets you mount a single or double monitor arm or keeps cables organized. Desk riser includes four AC outlets and two USB 2.0 ports.