The KCD220 offers the ability to ergonomically mount multiple displays.

Also check out the Kontour K2C22H products, which provide additional manual height adjustment on the column and other improved features and performance:

K2C22HB
K2C22HS

Features

• Centris Technology provides smooth, fingertip tilt in all directions
• Screen angle stays set until you decide to re-adjust
• Clamp option allows mount to be installed from the top of the mounting surface
• Multiple mounting options: edge clamp, grommet clamp, grommet thru-bolt
• Clean look with minimal hardware visible from underside of work surface
• Independently adjustable tension at pivot points for customized control; tension can be optimized for touchscreen use
• Quick, easy cable management with infinitely adjustable cable management clips
• VESA® 75 x 75 mm and 100 x 100 mm compliant (interface brackets available for non-VESA® compliant displays)