I have been working on this 2 story breeder pen with egg roll-out. I got it boxed in but still have to cut out the doors. I am glad most of the wire cutting and crimping of the wire is DONE ! my hands are trying to cramp up... The pen is 10 feet long with 6 pens per row(12 total) so that will keep enough breeders to keep me busy for a while(til I get more pens done ). I am going to install low-pressure watering cups and a feed trough made from 2 inch pvc pipe. I don't have the poop pans inserted in the space between the pens. I inclined the bottoms 2 inches, hopefully that will be enough for the eggs to roll to the front.