We bought two for top and bottom of stairs.  The instructions were good but you do want to follow them to ensure proper placement.  I love that it swings back to close on its own and I do love that it has a smaller dog/cat door within.  Also, that there are extensions that can be used (we did) and they also work well.  I also appreciated it being temporary so I did not have to drill holes in the walls or banister to have it fit securely.  The adjustment pieces that come with it work really well.