I'm disappointed with one main aspect of the Wright Products VH440 door closer. It seems that I have to open the door at least half way, before the closer will do its job. Since I usually only open it wide enough for me to pass through, the door often slams shut without the closer functioning at all. If I'm carrying something large and open the door wide, then the closer works good with a smooth and quiet closing. I paid more because I thought an oil-filled closer was better, but it is not working out for me.