This product overall is good but found some flaws in the design and construction that can make it challenging to use.

First off the special nuts provided to assemble most of the pieces together are low quality and the inside threads are easily broken.

Second issue I had was using it with 55" TVs are very difficult because the micro-adjustments knobs are actually rubbing the aluminum columns.

Third issue is related to the tire holders they got broken after very light use. It seems the tire holders are not designed to support the weight is intended with 4 55" TVs (TCL).

It is almost exactly what I had expected. Sturdy, well made, it rolls easily, it will take the 55" screens I wanted it to in the first place as and an added benefit it will easily hold my single 80" screens with a nice strong stand. The reason for the 4 stars, and is that the stand will be a little short for how i plan to use it. I didn't really think about it before, but the bottom of the lower pair of screens will be less than 3 feet from the floor. I am planing using this for exhibition and displays. so if someone i standing in front of it, the screen will be almost completely blocked. The vertical or upright pieces are only 6' tall, if they were just 8 feet tall it would make a huge difference. I am going to search to see if can find he same extrusion and get two 8' pieces. If Monoprice could help in that regard it would be awesome.

I have converted my 2 car garage into a man cave for watching sports, drinking, and playing darts. I needed a solution to allow for TV's that would allow me to use my attic access door. Even the low profile mounts would put the TV's in a dangerous proximity especially for when you would move things too and from the attic.

This solution allows me to simply unplug one power cable (a separate power strip I added) and roll it out of the way. Easy to build and a very sturdy product. This is a great solution.

Lots of additional adjustments so you can make it line up just the way you want it.

Very well engineered product that allow infinite adjustment of screens to insure proper alignment. If you are building a 2x2 screen system this is the mount I would recommend.
Fast free shipping was a Bonus.

As an educator I'm always seeking new ways to present information. The 2x2 Wall Display Cart provided me with a professional grade product that I use with four 55" monitors creating an impressive video wall. The mobility of the cart allows me to move it throughout the facility. The Monoprice package included everything I needed to mount the displays - screws, spacers and even a small level. I was so impressed with the quality I purchased a second unit.

Solid.
Sexy.
Can't beat the price.

This stand looks great and works really well.

Can't be beat for the money.
Pretty awesome stand
Hung 4 46" video wall panels on it and a small shelf
Rolling video wall is sweet!