The WorkFit-S clamps on to the front edge of your desk and uses the Ergotron's Constant Force spring lift mechanism to assist in moving the keyboard tray, upper worksurface and monitor through the range of motion. The vertical adjustment range is 18", and the monitor mount supports independent vertical adjustment through an additional 4.8" range. The mounting surface must be between .47" and 2.4" thick for the clamp to function, and the monitor must be between 16 and 28 lbs for the LCD pivot (10° down to 20° up) to function correctly. The keyboard tray is 27" wide x 9" deep x 0.25" high, can adjust to a 7.5° negative inclination, and can support a maximum weight of 5 lbs. It can be mounted at 3 different depths which provides a 3" range of adjustment and in addition can also be positioned to either the right or left in order to centrally position the keyboard in front of the monitor. The upper worksurface is 23" wide x 15" deep x 0.25" high, with a maximum load capacity of 5 lbs.
This HD model is designed to accommodate monitor sizes up to 30" and weighing between 16 and 28 lbs can handle a maximum combined weight load (including monitor, worksurface and keyboard loads) of 29 lbs.
NOTE: It is recommended to strengthen the mounting point to prevent damage to the desktop.