I found the pen I was wanting. I call it “Jeep Jail”. It has 8 panels but I had to remove 2 of the panels in order to accommodate my husband’s pool table. The doggie door is just a few feet away from the pool table. It could be mounted to the wall but I don’t want to do that. It has a double gate. It looks just like one that I saw on here a few weeks ago. But I don’t remember who had it. The gates are not connected in order to allow Jeep to go through the doggie door. They are just pushed up to the wall to make a corral around the doggie door. One door has a bar on both sides to lock it in place. But the other door only has one bar. Well, Jeep had learned to take his paw and pull the gate open. So I put an old fashion Iron for ironing your clothes (made of Cast Iron) against the gate. Next he sat and banged the gate with his paw against the Iron. It has a little bit of play to it. Now I have added a bungee cord at the bottom. He is so smart. The panels have knobs at the top so you can loosen the panels and shape the pen into a square, circle etc. It has a solid bar at the bottom of each panel so it’s to heavy for small dogs to slide it around. I wish it was made for outdoor use. We are going camping next week and it would be nice to have him in a exercise pen vs tethered with his harness on.