Patio Panel

What are your experiences with a panel patio dog door?
I have a Bouvier pounds 95. I am thinking of installing a door panel door doggy style patio. How easy or difficult is to install the software? Effects on energy consumption. Ease of formation and / or use of animals company. any comments, etc are welcome. Thanks!
I had one for a cat, but the product is similar, it worked well and was easy to install (The top was spring so that automatically fit any door). However, without doubt more air hot / cold, both through the panel and especially through the door itself. It would also have serious concerns about its use at ground level because there was no good way to lock in place. My other major annoyance is that you had to take it out whenever I wanted to come of the door.
How to Build a Patio Seating Wall or Wall Panel