Solid frame made with treated lumber. Pine board and batten front torch sealed.
This is 8x12. If you have a tractor or utv or even a riding lawn mower you could pull this around the yard for fresh grass.
Could use clear panels on the sides or plastic put on for winter. A coop to sleep in could easily be added inside. Was going to install metal screen for anti mosquito over the cattle panel then put 1" chucken wire for predators. Needs a bottom predators protection screen so nothing digs under it.
Has no bars or anything inside. Hatch door in the back but swings in. Could come off and install outside to let them out that way when a coop is built on the inside so you dont have to crawl through to open it. Can deliver for free if you are within 50 miles of curtice.