From Ergotron - This easy-to-use sit-stand desk converter allows you to instantly raise or lower your keyboard and two displays in one simple motion, keeping your system stable as you work. Includes a complementary worksurface and larger keyboard tray.

WorkFit-S transforms an office into an ergonomic workstation. It's easy to adjust through the full range of motion, moving straight up and down so it won't intrude into your space upon standing. The keyboard sits below the desktop height for better ergonomic comfort when sitting.

Features:
Includes height-adjustment column, desk clamp, crossbar, two (2) LCD pivots, worksurface, large keyboard tray
NOTE: Extra-long cables may be required to span between standing and sitting heights

Maximum outside width of display is 24.5" (62 cm) when display is 2" (5 cm) thick. Accommodates most displays with screen-size up to 24" as well as some displays with screens as large as 26". Actual allowable width of displays will vary slightly depending on display thickness. Note that older versions of this product used a narrower crossbar, which accommodated monitors with screens up to 22"

Weight Capacity: Maximum total load on height-adjustment assembly = 25 lbs (11.4 kg). LCD weight = 6 - 12 lbs (2.7 - 5.5 kg) each, worksurface ≤ 5 lbs (2.3 kg), keyboard tray ≤ 5 lbs (2.3 kg). For proper operation the total weight of components when added together should not exceed 25 lbs (11.4 kg)

Lift Range: LCD and keyboard adjust 18" (46 cm) in tandem; LCD adjusts 4.8" (12.2 cm) independently; maximum LCD height adjustment = 22.8" (58 cm). The worksurface restricts the vertical travel range of the LCD lift pivot; height adjustment of LCD without worksurface is 5" (13 cm)

Install displays at 3° or 8° upward angle for optimized viewing conditions

Desk Clamp attaches to surface edge .47" to 2.4" (1.2 to 6 cm) thick
NOTE: Because mounting surface materials can vary widely, it is imperative that you make sure mounting surface is strong enough to handle mounted product and equipment

Ergonomic back-tilt keyboard tray ensures wrists remain in a neutral position during data entry - avoid repetitive-stress injuries while increasing comfort and productivity

Keyboard tray can be installed in nine potential locations relative to the monitor: centered or off-set to left or right; at standard focal distance or 2.2" (5.6 cm) or 4.4" (11.2 cm) farther away

Worksurface Dimensions: 0.25"H x 23"W x 15"D (6 x 585 x 380 mm)

Keyboard Tray Dimensions: 0.25"H x 27"W x 9"D (6 x 685 x 226 mm)

Durable, easy-to-clean exterior composed of aluminum, high-grade plastic and powder coated painted steel

Mounting Standards: VESA FDMI MIS-D, 100/75, C (hole pattern: 100 x 100 mm & 75 x 75 mm)

This unit is used and there are minor scratches on the back of the vertical support.