Just installed. Where I needed to install, I put a plank of wood first, since there was a stone chimney behind me. I also removed the large screws securing the device. So far, so good. I like the darker color and it seems well built. I also think it's good that the manufacturer has included a screw template with the device. It's a simple thing, a rigid piece of light cardboard with holes in it, but it makes installation a lot quicker. Other manufacturers should do the same. Therefore, they must contain larger screws. I might get another one to store in the garage. Now I'm giving 4 stars, but if I can stand it, it's easier to increase it to 5.