The material for the coop was given to me by my wife when she backed my van into my shop and took out both garage doors. The doors had to be replaced but were not totally destroyed. They are metal on both sides with insulation in the middle. I used all the hardware and hinges to make the bottom swing open for easy cleaning, and the back panels open up to get inside to fill feeders, waterers, and get to the nesting boxes. There are two trailer jacks mounted on each end of the axle, so i can jack the back end up. I hook onto the tongue with the three point hitch on my tractor and move it around the yard every couple days. The chicken door has a cable hooked to it so i never have to go in the run to let chickens in and out.