This two-chamber Bat House is designed to allow bats to live in an area that will create a cleaner environment while protecting them from predators. The bat houses can be installed outdoors on trees, poles, buildings, etc. All the hardware and attachments are included to make it easy to install. The dimensions are 15" x 12" x 4" and it is modelled after our proven BCI certified bat house. These bat boxes are hand-carved from high-quality Cedar wood and naturally resistant to water, making them ideal for all-weather. The two chambers offer optimal roosting space and excellent conditions for bats to live in. It can hold up to 75 bats, helping to eliminate insects from the backyard.