Chicken Nest Boxes: What Size and How Many?. Each box is 12 inches W x 12 inches L x 12 inches T. The total height of 6 boxes is 30 inches tall to allow for the sloped roof. We used pressure treated plywood and 1x2 pine boards for the perches that run across the front of the boxes for them to stand on. We then used primer and painted the boxes green. We use straw in our boxes. Providing your hens with a clean, safe place to lay their eggs is very important and minimizes damage to the eggs and ensures you collect clean eggs. Happy Chicken Keeping!
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