It's 4' X 3 1/2'... about 14 sq. ft... I repurposed an apple bin.... Holds about 800#'s of apples...
It's where I kept my rooster for 3 weeks to get him a little more submissive... seems to have worked... I kept it in the run so the hens could prance around and on top of him.... He seems to have gotten the message... BIG MAMA hen is in charge now....
https://www.backyardchickens.com/t/930788/hatching-box-quarantine-box-multi-purpose-cage

It's where I kept my rooster for 3 weeks to get him a little more submissive... seems to have worked... I kept it in the run so the hens could prance around and on top of him.... He seems to have gotten the message... BIG MAMA hen is in charge now....
https://www.backyardchickens.com/t/930788/hatching-box-quarantine-box-multi-purpose-cage