HUANUO 13 to 40 Inch Dual Monitor Arm for 2 Ultrawide Screens, Height Adjustable Full Motion Stand with 2 USB Port, VESA 75/100mm Mount, Holds up to 26.4lbs per Arm, Black

I have the single arm widescreen for my wife and the double arm widescreen for myself. These are great. There are a few caveats. If you want two 35" side by side, it might be a tight fit, they may not fit if you want them high up.... for ultrawides definitely going to be pushing it. I have a 35" ultrawide and a 27" normal aspect ratio monitor and I can fit them side by side if they are adjusted a bit lower than I want them. At the height I want them (eye level, I am a 6'4 man though) I use the widescreen horizontal and the turn the normal AR screen vertical and I game on the widescreen and use the vertical one for webpages/etc while gaming. as you can see from my picture i can probably get more wiggle room by moving the mount over to the right further and extending the widescreen further out. but I don't still dont think it would be enough for a horizontal side by side without dropping the height a little. which if I really cared I would do, but I'd prefer to have them eye level in this configuration.They work for my needs but any larger and I would have to move the arms down to have them side by side even with one vertical. How well will two normal AR 35" screens fit side by side? I'm not sure I think they will fit but you may need to lower them a bit below eye level. actually another user with what a picture of what looks like fairly large wide screen monitors side by side but as you can see from his picture the monitors are only like an inch or two off the desk. as a 6'5 man with a relatively low desk it takes up a lot of length just getting them to my eye level. That's fine though I don't mind having one vertical. these are the best ive seen that weren't several times the price level. If these wont work for you nothing reasonably priced will (at the time of this review).That said these are the most accommodating and best well built gas spring dual arms I've used. If you really want two screens horizontal side by side and your use case is bigger than you think will work, you may want to consider putting them on individual arms instead so you can space them further apart.That said, these arms are very good build quality. the gas spring in them is powerful, I have my wife's older pretty heavy dell ultrawide on a single arm one and it lifts it with ease w/out being topped out on the adjustment.You will have to push the arm down to the desk all the way to find the adjustment for the spring. I think a lot of people don't realize this and think it's not up to lifting their monitor because you can tighten it up some out of the box for heavier monitors. The arm should be able to accommodate any modern monitor given how light they've gotten and some pretty heavy older ones. all the adjustments are smooth and easy to do, the least smooth adjustment is the vertical tilt that happens right behind where the vesa bracket is, but its still pretty decent. the swivel and height of the gas spring are effortless. it looks nice, it feels heavy and durable.I'm an i.t. guy and ive used a lot of monitor mounts and these are well above average quality. Just need to decide if you want a double mount or two singles for your needs. id not recommend anything cheaper or anything pricier. this brands higher model/widescreen ones are the ones you want price/performance they are the sweet spot

I used this to mount a 34" Dell ultrawide and a 27" Benq 16/9. I saw pictures others posted with the parts loose in a box. As you can see from my photo it was very nicely packed.The stand is very easy to put together. I do have a lot of mechanical experience but I would say the average person can assemble the stand without any trouble.I mounted mine to a engineered wood "tech desk". There is a privacy panel so I could not use the clamps and had to to drill a hole to mount it. It feels very secure.Mounting the monitors is straightforward. You remove the current stand, add the 2 top screws to the VESA holes, and the monitor slides onto the VESA plate. Make sure you orient the plate so the "U" shaped channel is facing up and the screw holes are facing down. You can then screw in the bottom screws. I highly recommend adding the 2 bottom screws before tightening the top screws. This keeps the top screws from lifting out of the U-slot and the monitor falling.I have not uses the cable management yet but it looks like it will be easy to use. Plenty of room for the typical cables used with monitors.When you attach the arms to the base you do not need to tighten the set screws a lot. Have them tight enough that you can move the arms with a very little resistance and they are not able to move on their own.When it was assembled and the monitors were mounted, it was very easy to adjust. I was able to easily push the arm down to adjust the tension. When doing this, do not push on the monitor. It could damage the monitor. Always push on the arm. If you are having trouble and using the clamp mount, simply mount it to the front of you desk, loosen the tension, and then move it the the back.If you are concerned with doing this after the monitors are mounted, you can push the arms down, loosen the tension until it is easy to move the arm, then mount the 1st monitor. Take care to make sure you do not attach it and let go until you know it will not push the arm down and damage the monitor. You can then increase the tension until it stay put but you can still move it.The same goes for the vertical pitch of the monitor. You want to hold the bottom with 1 hand and loosen the tension bolt with the other. Get the monitor set where you like it and then tighten the bolt. Do not try to force the monitor to move without loosening the bolt. You could damage the monitor.I have installed quite a few of these over the years, and have wrenched on cars at a high level (professional racing and for fun) my whole life, so I think have a pretty good idea of when items like this are well made. I would not hesitate to recommend this stand to family and friends.