The Barn Owl box is manufactured in the USA by multi-generational wood craftsmen * The roof tilts 5° to the back to allow for water runoff and has a tongue and groove joint * The entrance hole is elliptical measuring 3 ¾" and 4 ½" with 4 grip grooves below to aid in owl entry * Includes drain holes in the bottom and holes under the roof overhang allowing for air circulation * A hanging strip on the backside of the box allows for easy installation (recommended placement is 12"-20" high) Dimensions: on box are 22" long, 12" wide, and 15" tall (roof overhangs box by 1 3/4" in front).