Well, my house sold much faster than I had anticipated which resulted in my having to be off the property last Thursday with a long list of unfinished items for the RV, top of that list being an enclosure for my cats to go outside securely. I found a campground 10 minutes from my house in the next town over and have been here since. The campground is called The Pines in Ashby, Mass. and they could not be more helpful and accommodating. I built the enclosure Thursday and Friday right at my site, the only request being I didn't make a racket over the weekend. Fair enough. Finished it up Friday evening and this is what I wound up with, the top and bottom fold in half and the three sides are interlocked with the top and bottom. I installed an aluminum channel on the RV which mates with aluminum angle at the back of the floor. The front is suspended by the two chains running from the RV to an aluminum tube under the floor. Disassembled and folded, the whole unit rides nicely on the cargo rack at the rear of the RV for travel. I installed a cat door in the side of the RV and that was that. The cats took to it slowly at first but have started to really enjoy being out in it. I have a few more details to finish up but I think this setup ought to work out pretty well.....so far, so good. Thanks, Rick