Yes.

And also, just because I'm happy to give a good review to a so well conceived product:
- The arm is very accurately adjustable to compensate for various monitor weigth, so the arm itself potentially lasts way beyond the life of a monitor.
- Cable management is also falwless, in my experience.

I just can't find any issue with this thing, yet, after using it for almost two years.
This is the one i got:
http://www.amazon.it/Ergotron-LX-LCD-Sup...8595&sr=1-1

And I actually regret I did not buy the double-monitor version.
http://www.amazon.it/Ergotron-Impostazio...8595&sr=1-7

I suspect I could actually add one more arm to the setup. I've never bothered making a real research on the vendor's website, so I don't know for sure.
http://www.ergotron.com/