That many shills asked for this in the past. There's some effort on many forums to remove posts about a dynamic mounting.com site. As they spam so much I'd not buy their products.
Try searching like this.
I am trying to find a wall mount for our business TV. What I need is a mount that adjusts up and down. I would also like some tilt but that is not the primary concern. Also, I don't have to have side to side adjustments. Does anyone have one they can recommend? I'm not finding great options for any that go up and down. Thanks!