Rite Farm Products strong, washable poly nesting box bucket kit with rear access cover. Simply attach this kit to any 3.5, 5, 6, or 7-gallon round bucket you have available, and you have a durable nesting box. This model is for collecting the eggs from the rear of the bucket from the outside of the coop. You will need to jig saw cut an 11.25-inch circle into your coop for the bucket to fit through. You will then need to hole saw, utility knife, or jig saw a 6-inch circle on the rear of your bucket at least 1/4 inch down from the top lip to allow for the covers edge to rest flush. You will want to mount it above center so you have plenty of space for the wood shavings at the base of the bucket and so the shavings will not come out when you open the access cover. See pictures for reference. Bucket is not included and is pictured for reference only. 12 inches long by 12 inches wide by 5 inches deep overall. Perch is 8 inches wide, and cover is 6.5 inches wide for a 6-inch hole. Made in the USA in Saltillo Texas.