Deluxe, adjustable desk riser offers a healthy addition to any desk, allowing you to sit or stand while you work. Large, 38" wide x 23-1/2" deep worksurface accommodates two monitors or a monitor and laptop. Ergonomic, retractable keyboard tray (25.5" wide x 11.25" deep) moves up and down vertically with the desk. Unlimited height adjustments range from 5" up to 20". Easily raise and lower with side handles. Gas shocks will assist, allowing you to easily move the desk up and down. Grommet hole allows you to route cables or add an optional monitor desk mount. Desk riser works with optional Deluxe Floor Stand (sold separately) to create a complete sit-to-stand desk or an extension to your current desk. Riser is fully assembled for use right out of the box.Deluxe, adjustable desk riser offers a healthy addition to any desk, allowing you to sit or stand while you work. Large, 38" wide x 23-1/2" deep worksurface accommodates two monitors or a monitor and laptop. Ergonomic, retractable keyboard tray (25.5" wide x 11.25" deep) moves up and down vertically with the desk. Unlimited height adjustments range from 5" up to 20". Easily raise and lower with side handles. Gas shocks will assist, allowing you to easily move the desk up and down. Grommet hole allows you to route cables or add an optional monitor desk mount. Desk riser works with optional Deluxe Floor Stand (sold separately) to create a complete sit-to-stand desk or an extension to your current desk. Riser is fully assembled for use right out of the box.