I have a version of Dennise's playhouse coop. I also purchased that little triangular tractor off of the Randall Burkey site to keep a couple of new young birds confined while in quarentine, and I liked it so much that I bought a second one just because. Well today I was getting ready to assemble the second tractor when I realized the dimensions are pretty close to the ones for my real coop and YES!!! it is 2'x4'. You can take one of the long sides of the tractor and it just fits perfectly accross the bottom of the house part of my playhouse coop. I mean perfectly. I couldn't have built it this well. It fits in just tightly enough to be held securly in place, making a perfect temporary divider between the space under the house and the rest of the run. The girls can look at the newbies but can't get at them and since I used the side with doors in it I can easily reach inside. Wahoo. A perfect newbie integration enclosure. No building skills needed. I feel like I won the lottery. The girls are glaring resentfully at the newbies as I write. They'll be buddies in no time.