ErgotronLX Monitor Arm, Extension, and Collar Kit – Add-on for LX Tall Pole Monitor Arms – White

Easy setup, easy adjustments, excellent quality

I love this monitor stand and it has served me well. I have the taller pole so this was to add a 4th monitor to the stand. This setup was a great investment.

Ergotron must be made of platinum because they are 10 times as expensive as the nearest competitor. I only purchased them because I got a good deal on a setup a while ago and then had to buy parts like extra arms, a longer pole to have stackable monitors, etc.They are highly capable at what they do. And their products are well made. Just super expensive. Still, if you're only going to to buy this kind of thing once. Ergotron is the company to go with. Reluctantly, I have to rate them the best - just not on price or ease of installation and use.

Does not fit the "ERGOTRON LX Sit-Stand Desk Mount LCD Arm - Mounting kit", i purched my original mount in 2015 and wanted to add a second arm, checked around and this model looked like it would fit, however i may have missed something in my check but the pole that was on the LX kit i had was much thicker than the one in this kit, therefore it didnt fit. Tripple check compatibility before purchasing. The only thing i can comment on since i couldn't use this kit is build quality, it seems to me that the quality of the plastic materials and fit is a little lower than the original LX kit i have, otherwise it seems like a good arm.

I already had the pole mount with 2 arms. I mounted my 34” Ultra Wides Vertical and then mounted the Mac Pro with the extension arm. This is a fabulous set up.

I used this for a third arm monitor and while I ended up not needing it, these Ergotron setups are fantastic for saving desk space and adjusting your monitor view. I love them. Incredibly sturdy, adjustable, yet still light enough to be manageable.

Just combining this with an adjustable height desk is incredible, total adjustability of your workspace and perfect ergonomics. Also the polished finish on the metal is really impressive.

works great