Same construction as here Isabel. We have a 40 inch Samsung and got the wall mount for it. Just make sure it is the right size for your TV. You won't have to worry cause the wall will hold it. Ours did with no problems. The concrete blocks along with the plaster makes it quite strong. All we used were some fishers with long screws. If it says your specific TV needs 200 x 200 then bring back the wall mount you got and get the proper one. Ours didn't need one that big. Ours needed 100 X 200 and like I said ours is a 40 inch Samsung.