Review on 🐾 Optimal Pet Door with Adjustable Telescopic Frame by Glenda Vollan

Installation was pretty easy. It's easy to follow the pattern once it's on the saw. To keep the level, measure from the bottom of the door using an adjustable square and make some marks with a pencil. Perfect size for medium sized cats. As mentioned, the hole is slightly larger than necessary, so remember to keep the door straight when you GENTLY tighten the screws. They are self-tapping and transition into plastic. I went to the manufacturer's website and found that this model is the only one that fits my door that is too thick.