Basically, the product of good quality and also the possibility for a subsequent sealing is super. As part of the door, the product has not fit with me, because the striker is otherwise trapped between the door frame. I do not know whether my door sits wrong or what was the reason. What should I also really complain about are the screws that have a really bad quality. I specially drilled and yet immediately put a screw and with a jerk of the head was in the bucket. As fast should not screw break. As I came out of a particular case, it happened to me with the 2nd screw same again. And removing broken screws if you have no suitable tool is because you. I've then the hardware store bought sensible screws and thus it was no longer an issue. The lowering function works well and set it can also very easily.