I was looking for something similar, and found one made by Ergotron, called the Glide Wall Mount, PART NUMBER: 61-128-085. It mounts flush to the wall and travels vertically around 18 inches.

This Rocketfish TV Mount Is Actually Worth Your Money . First up, the technical stuff you actually need to know: This beast ...

Adjustable Tilting/Swiveling Wall Mount Bracket (32-60-inch) - $60.61; Recessed Pro Power Kit - $48.18; ... An allen bolt is provided to secure the arms to the mount in s away that prevents the TV ...

Most wall mounts attach to your wall, causing your flat screen TV to protrude in ways you may not like. Mounts that invade your wall to mount the TV more attractively (like this one) are a bit ...