I ordered two and they were easy to set up. There's no locking feature for the TV which could be a problem if you have small children. the TV just "sets" on the rail and can easily slide back and forth.
I really like the articulating arm I purchased. It has a good length that allows me to swivel and adjust my TV to the right viewing range for me and it also allows for adjustment so that it can be moved for anyone else later. It is a sturdy product and I feel safe with the support it gives my television. I was impressed with how fast I received the product and whenever the need arises, I will purchase another for my other TV sets.
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