Got tired of chickens pooping on the deck and patio but i still wanted them to have more room than the crappy coop i bought from TSC. So i made this run that i can open and close the doors at the coop once they have scratched down to the dirt in one of the runs. tried to make it cheap and maint free, the frame hoops are 1/2 poly pipe for irrigation. PVC on the ends for stiffness. the doors are on a closet door bypass track. So far it working pretty good.