The Woodlink Bluebird House (WLBB1) is a sturdy nesting sanctuary that is designed for Bluebirds. This is made up of kiln dried, e-forested, inland red cedar that guarantees its resistance to weather and damaging insects. The house features an easy open front panel to have an easy access at the interior. Also, this is built with a 0.5 inch airing gap at the top and a drainage hole at the base. The entrance hole measures 1.5 inch. Once purchase, this is automatically assembled and ready to mount.