My new one is 8 X 12. Love all that space! Got 11 standard birds in it now, but definitely need a poopboard! ASAP! I also have a 4 X 8 grow-out coop with 6 chicks in it. I will be cycling thru 3 batches of different aged chicks soon. Lots of juggling between the incubator, brooder, grow-out coop & main coop. Can't wait for warmer weather & get these birds free ranging!