This product did not install at all. This should have a large disclaimer saying it works great for wood windows, but very poorly on vinyl. The spacers, which I needed to use due to my jamb length, were a joke (cheap plastic, which bent when any torque was applied to the screws). The bracket made the door unable to close, until I bent it with a hammer. The lock part was unable to attach to my sliding door at all, which has a steel core behind the vinyl. I ended up having to use washers for the spacers, and double stick tape to attach the lock to the door itself, which I am lucky I had at home already. For a $30 product, I needed to improvise to get it to even work, which is aggravating when you spend so much. Also, with the double stick tape, it does not provide any real security. We mainly bought this as a child lock, so it works for this purpose, but I would not trust it against a burglar.Also, more companies need to learn from Ikea. Diagrams speak louder then paragraphs of words, but a small picture of a woman holding the unit against the door is not even close to sufficient. Simple diagrams are very helpful, and should be used more often instead of small black and white photos.
Difficult to Install,
does not work on some doors