When I opened this wall mount, it was missing one of the vertical hangers (one of two, one of the three MAIN pieces) and the instructions. I didn't know what else was missing because I didn't have the instructions or a list of parts included. I drove 90 miles (one way) to install a television for an elderly relative, but when I got there I couldn't because of all the missing parts. I wasted a day of vacation and gas all for nothing. I could not locate another wall mount in stock anywhere, at any store within a 200 mile radius. I had to order another wall mount, this time a different brand from a different store. It took another six days to arrive. I don't know if the mount left the factory without all the necessary parts, or if the were lost during shipping. Open the package and check before you start the install.