Couple complications Min ergotron extension arm I was surprised Continent Datum
Ergotron LX Extension and Collar Kit - Mounting component (articulating arm, installation hardware, cap cover, pole collar) for Monitor - white with grey accents - screen size: up to 40" - pole
Ergotron 98-130-224 LX Arm, Extension and Collar Kit - Black
Ergotron LX Extension and Collar Kit - Mounting component (articulating arm, pole clamp, installation hardware) for LCD display - screen size: up to 32" - Hunt Office UK
Ergotron LX Dual Stacking Arm - Mounting kit (tray, desk clamp mount, grommet mount, pole, 2 articulating arms, 2 extension brackets) for 2 LCD displays or LCD display and notebook - polished
Wall Mount Swing Arm | 200 Series Monitor Extension | Ergotron
Ergotron LX Wall Mount LCD Arm - Mounting kit (articulating arm, mounting base, extension brackets) for LCD display - aluminium - screen size: up to 27" - wall-mountable | Stone Group