This excluder is specifically designed for raccoon. It features a door stop panel to prevent raccoons from pulling the door open from the outside. Attach the excluder over an entry/exit point with screws, nails or heavy duty staples. Raccoon can exit from the inside but cannot gain entry. This excluder measures 8 x 8 x 14" and is designed to fit over 8 x 8" or smaller openings. It is constructed of heavy duty 1" x 1" - 14 gauge wire mesh.