I needed a replacement segment for a gate whose mounting bracket had broken on one segment of the rail. This rack was wider, but the teeth lined up, and the offset away from the mounting surface was the same, meaning that the distance from the mounting surface out to the edge of the rail was the same as for the thinner rail, so it worked perfectly as a replacement. The mounting holes are in the same position vertically as the prior piece, so there was no hassle in fitting this except adding a couple of new holes to accomodate the very welcome additional brackets (which should keep it from breaking again). There is a substantial steel channel down the middle, but I was able to work it easily with a hacksaw. Genuine product, only the parts I needed, came with mounting hardware, very fair price. Really glad I sourced it directly from Aleko.