I used those dog panels for a run. They are normally 10' x 10' just like yours is. I had 2 of them so I made mine 10' x 20'. I then decided to use hardware cloth around the bottom but once I got started I decided to hardware cloth the entire thing because the dog pens have huge gaps where the sections connect together. Plus, you have the big holes in the fencing itself. Raccoons can easily reach through and of course weasels can get through easily as well as snakes. You may not think you have weasels but you could find out later that you do and the way you find out will not be nice. Then I took some 2" x 4"'s and framed out the top and put hardware cloth on that. It got to the point that I had to question myself for even using the dog pen to start with. But, I had them and I was not using them for anything else and I guess with the hardware cloth you are getting double protection. As far as the door is concerned, it also has huge gaps. So, I also put hardware cloth on it and let it run past the door about a foot or better so that when it is closed it seals the gaps. I still feel that could be a weak spot. I used large zip ties (a lot of them) that are resistant to ultraviolet rays to fasten the hardware cloth to the fencing. The zip ties of course could be gnawed into but there are a lot of them and then you still have the other fencing behind that. On one end I left a 10' section of the pen out and that end is fastened to a large coop with a pop door. I also was planning on running a couple of strands of electric wiring around the bottom for added protection, but still have not did it. I probably will since I have a couple of charges and wire already and I feel security is a lot like what people say about size of coop and run. You know, bigger is always better. Well, more protection is always better, too. We all know everything wants to eat chicken.