Catio Tower - Front Top Mid & Front Bottom Mid Dual Entry/Exit PointTowers are a great way to help your cat climb up or down vertically in a small amount of space. Towers are generally used against buildings, fences, or one of our enclosures. All towers come with a cedar floor and attached cedar shelves. Towers ship fully assembled. They are three sided with a 6" lip on the third side to attach to the building. All access openings accept tunnels, bridges, and stairs. You are able to select both the Length (L) and