This metal chicken run is what I needed to protect my birds!! It was easy for 2 people to put together, difficult for one person alone. We hooked the end directly to the outside of the coop, so they can come and go at will. The half door makes it easy to feed the chickens without any getting out. For more room for my large flock, I ordered a second, which will be installed on the side of the first, making the forage area 20X20. Just for extra safety, we put a row of cinderblocks all around the bottom edge. Because of our snow, we are thinking of tarping more of the top and side just for the winter. Now all the birds need is a swing for fun play.