Pros: works without holes in your wall
Cons: annoying to adjust
First one we ordered we couldn't get adjusted no mater what we did, turned out to be defective. The manufacturing company was fine about exchanging it for another one. The next one we got takes time to adjust but works fine. Doesn't always shut behind you anymore after a few years of use but probably would if we bothered to adjust again. It fits in a span as stated on the label as long as the exact width you need isn't the width right between needing an included extension piece or not. It is not very stable if your desired with is in that spot. Otherwise it is stable and has worked great. Also, we do not use it at the top of the stairs, it is in a doorway between rooms.