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 overall vertical adjustment range is 18", and the monitor mount can be independently adjusted 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 6 and 16 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.
The LD version is designed to support monitor sizes up to 24" diagonal and between 6 and 16 lbs. Total combined weight load (including Worksurface, Keyboard and Monitor loads) should not exceed 18 lbs. For monitor sizes larger than 24" diagonal or total weight loads greater than 18 lbs. the HD version of this product may be an option.
NOTE: It is recommended to strengthen the mounting point to prevent damage to the desktop.