No Pic But
In our 09' 3670 it is mounted on a piece of plywood covered with the black felt type stuff. I'm fairly sure screws go thru the ply and into the plastic on the TV. This set-up is then wedged between the two cabinets that have cleats screwed onto the sides of them. They then sank some screws from the face of the ply into these cleats. The felt does a good job of hiding the screws. Hope this helps.