I bought the cat door to let my cat go outside to use the bathroom. It allows the cats to come and go freely without me having to open it for them. Overall, very satisfied! I recommend it to all cat lovers!

The door is very sturdy and still works like the first day after 6 months. The locking mechanism is relatively easy, it has 4 positions: locked, only entry, only exit, open. It makes a little noise when the cats use it, but it serves me well because I can tell when they come in and out.
The installation is a bit difficult, especially if the door has a lining, so it requires a lot of attention when cutting. Also, the screws included are longer than necessary in my case, but it's not difficult to find ones of the same diameter that are a little shorter.