I am very satisfied with the product. It was installed on the front and back doors in about 15 minutes each. The rear door was a little tight, and as the temperature and humidity rose, the door and jamb swelled some, so be aware of that. I don't use the back door much, so it is not much of a problem. Just a little tug or firm push needed. This of course should ease as cooler weather comes. The one thing I thought of that was strange is that as an older person that might have a health issue in the future, I only lock the keypad deadbolt. That way, my son and neighbors can get in if they need to. Otherwise, I am sure first responders would have to come through a window because they're not getting through the door. Very satisfied, and recommended to the owner of my alarm company.