Perfect and super easy. I changed it myself and I have no idea about these things. It has some very basic instructions on the box which guided me completely. The frame is from 1990 and it fit perfectly.

The screws that were included didn’t fit exactly in the frame so I used the old ones and the job was done properly. I bought 3 locks and all 3 came with all the necessary accessories needed for installation, and there were even some left over.

I am amazed by the 5 stars that many give! The lock, as a lock, is not bad and has a relatively good function. The problem is the (one) plastic spacer for the female part. The plastic is soft, it is only one piece and of course does not inspire confidence. I don't know how it can fit into older aluminum (series from 1990-2000). If you don't have other spacers, you won't make it.

A simple and good balcony door lock. Sturdy construction and easy to install. After a year of purchase and installation, it has no issues. The price is also satisfactory. I would say it's worth its money.

A simple sliding door lock. You can't rely on it alone to secure a balcony door. Definitely needs additional security locking