Stovall Products 1H Chickadee and Wren House Post Mounted, Large Chickadee and wren house post mounted Attracts house wrens, black-capped chickadees, tufted titmice and white-breasted nuthatches This house designed to be mounted to a post Entrance is 1-5/8-inch to deter house sparrows Measures 14-1/2-inch by 5-inch by 8-1/2-inch