The Sunshine Bat House by Coveside Conservation Products is hand crafted in Maine from sustainably-grown eastern white pine, and includes instructions on placement, mounting, and maintenance. Did you know that a single little brown bat can eat up to 1,000 mosquitoes an hour?! This bat house is large enough to provide home to a nursing colony, up to 200 bats. Field testing of many of these houses indicates that bats are readily attracted to and occupy this style. With two chambers and an open slot at the bottom, this abode is suitable for all species of small, insectivorous bats. Features include a screened landing platform, roughened interior surface and echolocation slots on the sides to help bats locate the hollow cavity. Dimensions: 17″ x 17″ x 6.5″.