Gas assist continuous height adjustment allows you to move smoothly and quietly between sitting and standing positions in seconds. Height adjustment range from 6.2 to 20 in above the desk, accomodates a wide range of users. +10°/-10° keyboard surface tilt to help achieve comfortable typing position. Primary work surface is large enough to fit two 24 in. monitors and holds up to 35 lbs. Includes 3M™ Gel keyboard Wrist Rest and 3M™ Precise Mouse Pad. Pre-assembled. Sold by each. 45% post-consumer content.