I have a Samsung SUHD 55" inch mounted on it and gig problem-free.

We have a Samsung 65 inch screen mounted, which is 10 inches above the maximum size specified by the manufacturer. Works wonderfully, all cables are hidden and there is plenty of room for the Horizon box. Very stable, no wobbling, no danger of tipping over. Very good product. Of course, there are more divided through, but also for more money.