I am by profession a toolmaker and it would never have believed possible to obtain such a stable wall mount for such a reasonable price. I've modified a little as I have exchanged two arms (square tube 20x40) to twice as long, so I my 55 "can pivot almost 90 degrees. Similarly, I've quickly a rotating device crafted in order to make a quick horizontal alignment can. Behind the Device is also sufficient space for Switch, Festplattenreceiver and headphones. Only the supplied mounting plugs I've replaced by Fischer bonding dowel. Nevertheless, there are of me for really stable version 5 Stars.