The product dimensions, as described in the specifications, don't make sense. For example, the width is specified as 7.9 inches. Precisely what width is that? The dimensions that would make sense to me is based on how the product is mounted on the wall. Then the width (or depth) would be the distance from the wall to the outer edge of the bracket, and the height would be from the top of the bracket to the lowest point on the bracket; again, when in the orientation as it would be mounted on the wall. A dimension of 7.9 inches seems to be way too big for either of these values. Please clarify. Thank you.