Built this chicken run with my dad. Bought the coop secondhand but all the rest was hard manual labor! My 4 chickens love it! Omg, lots of $$$, blisters, scrapes, cuts etc went in to the making of it. It was all worth it! 4x4 posts above ground on metal set in concrete 1/2 inch hardware cloth for all sides (and ground soon) 2x4 for support beams.