I built my coop out of mostly salvaged material. In my garage I had an old wooden storage chest I wasn't using. Because it opened from the top, I thought it would be great as the nesting box. I lifted it up on cinder blocks and placed it along one wall of the coop, cutting an opening through the chest and the wall so the hens will have access. The chest is perhaps 2.5 ft. deep, 4 feet long, and maybe 2 feet high. I put straw down as bedding material. I have 7 hens, and was wondering if this would work out. This seems much bigger than most people's nesting boxes, but I figured the ladies would appreciate the space. I could add 2 partitions to make 3 stalls if they would like that better. The hens are about 18 weeks and are not laying, so I can't tell if this is an agreeable arrangement.