I bought this to replace an old up and over door, removing the old one took longer than fitting the new one, it was simple and the vidio on you tube helped. It works well and I am realy pleased with it and the price was the best I could find. The only issue I've had is I have come home twice to find it open. I've checked the batteries in the fobs and they are good, I also lubricated the switches on the panel. To put my mind at rest I now have it on a timer so it can only work when I'm likely to use it. Because of the problem I've given 4 not 5 stars on the rating.