I have 3 playpens set up on the front deck/porch. They hook together nicely, I added nylon zip ties for extra security. I also have it arranged so it's divided, I'm trying to introduce a new/foster ferret and my Parris is being a bit of a brat. This way she is *with* the new guy, but can't get to him. In my opinion, these play pens are one of the best investments I've made for the ferrets. Very portable, we use them for adoption/education events too. Do be careful about anything they can push against the side, climb on, then up and over. Ardith www.nnfn.net www.renoferrets.org [Posted in FML issue 4532]