Spacious Shelter for Up to 30 Bats: This tall, single-chamber bat house offers a warm, dry, and secure space for up to 30 bats—ideal for supporting natural insect control in your yard. Rough-Sawn Pine Interior: Crafted with thick, rough-sawn Eastern White Pine to mimic bark, providing excellent grip for bats to climb, cling, and roost comfortably. Built-In Ventilation & Echolocation Slot: A 5" slot ensures airflow while aiding echolocation, helping bats safely locate the entrance at night. Weather-Resistant Sloped Roof: Designed with a slanted roof to shed rain and an open-bottom layout that prevents bird nesting and removes the need for cleaning. Sustainably Handmade in the USA: Built from eco-conscious, durable pine in the USA—ideal for bat conservation efforts and promoting healthy backyard ecosystems. Conservation Bats are in need of protection if they are to survive. They have proven themselves as valuable members of our ecosystem, and we must increase the awareness of people who have the ability to protect or to destroy these little creatures. Bats are declining, world-wide, at an alarming rate, due to human misunderstanding. They have typically only one offspring per year, making their comeback slow and in need of our help. The walls are thick to keep the interior warm. They are rough-sawn to provide a surface for the bats to hang onto. Inside are several partitions, because bats like narrow spaces, and this allows more surface room for roosting bats. The houses are open at the bottom to eliminate the need for cleaning, and to prevent birds from nesting in the house.