Locking options: The cat flap has four locking options: inward opening, outward opening, double-sided opening, and closed. You don't have to open the door when your pet wants to enter the cat flap. The cat flap makes your life easier and allows your pet to enter your home unhindered. Easy to install: The cat flap is suitable for brick walls, wooden doors, PVC, and metal doors and can be installed on doors and walls with a thickness of 2 to 5 cm. The cat flap is made of durable ABS plastic, is weatherproof, and easy to clean. Cat flap dimensions: Frame size: 24.5 x 28.5 cm (W x H). Door size: 20 x 22 cm (W x H). Thickness: 5.5 cm. Very quiet: This door is extremely quiet and offers optimal protection against drafts thanks to the special seal and magnetic closure. The brush eliminates noise when opening and closing the door. Suitable for most cats and small dogs (Pomeranian, Yorkshire Terrier, Pekingese, Dachshund, etc.). Transparent optical design: The transparent cover is made of