PetSafe Staywell Classic Manual 4-Way Locking Cat Flap – Cat door with 4 programmed locking settings, White, Tunnel includedEASY INSTALL The Classic Cat Flap comes with a cutting template, installation guide and each half simply screws together for a Fast and Precise fit INDEPENDENCE The flexible 4 Way Locking system gives your Cat a greater area of exploration and freedom; catering to their curious nature and keeping them active THICKER WALLS For installation into thicker Doors the 917EF model Cat Flap includes a fixed tunnel for applications up to 6 cm thick. Please note