Our first coop built spring 2013, has three sides that open for cleaning, all insulated for Canadian winter, windows and vents that open on sliding rails, and "egg-hatch" sections that open for egg removal. The metal roofing reflects excess solar heat all summer. Feed bin on the rear door allows us to go away for a few days at time. Coop is 6' x 8' x 5' tall (on 2' legs) and the run is 8' x 12' -shown here under construction.