But that stand only supports small monitors (up to 24"). The original poster indicated that he's using a 30" monitor in the center.
This do have this one as well:
http://www.amazon.com/Ergotech-Trip...office-products&ie=UTF8&qid=1427556737&sr=1-2
Now, it is designed for 3x27" monitors. I suspect it should be no issue having a 30" center monitor with two much smaller side monitors, especially in portrait.
I have the model earlier listed, which is the same as the one I linked minus the telescopic arms. Which, incidentally, you can actually order separately and turn the first one into the second one.
I love mine for my 3x23". I'd like larger monitors next time I buy new monitors, a long time from now I suspect, so I might have to invest in those telescopic arms.
I do like this, a lot. I finally got around to getting one after years of going with the three stock stands on my monitors. Great decision.
I made the decision to buy Ergotech after seeing a lot of iffy reviews on other models, where they have more sag on the side monitors or other issues. These ergotech models are exceptionally sturdy. I definitely recommend putting one together with two people, it might make it easier to get everything in line properly without any weight shifting. I struggled alone but ultimately got it together (if you go 3 wide without having the monitors angled, it should be easier).
I definitely recommend the Ergotech, but I'm trying to look to see if any for sure support 3x30" monitors. Again, I suspect the middle can be 30" if the sides are smaller, but I can't make that guarantee.
I do strongly suggest you reach out to Ergotech support, they might be able to provide a solid answer.