So I needed a door that would allow the dogs to get out when they wanted, yet keep the house warm, or cool from the unconditioned garage. We have a doggie door in the garage to get out of the elements, but it is easier if they can let themselves out when they need. It took a few minutes but both dogs figured it out easy enough, with a little encouragement from snacks. Regarding this product 1) I could not believe how easy it was to install 2) How well it works no air comes through at all, and the dogs just walk right through when they want. 3) I love we can see through it so well. Exceeded all expectations.