4 Types of Closing: The Cat T Pet Door has 4 closing options: inward-opening, outward-opening, two-way opening, closed. You don't have to open the door if your pet wants to enter the space. Cat flaps make life easier and keep your pet free at home. EASY INSTALLATION - 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 that is weather resistant and easy to clean. Welcome Door Dimensions - Door Dimensions: 19. 7 x 19 cm (W x H) Thickness: 2 cm. VERY QUIET: The door is extremely quiet and offers optimal protection against drafts thanks to a special seal and magnetic closure. The brush bar eliminates noise when opening and closing the door. Suitable for most cats and small dogs (Pomeranian, Yorkshire Terrier, Pekingese, Dackel, etc.). Adopt transparent vision design: the transparent cover is made of high-strength fiberglass, which is UV resistant, good transparency, moisture resistant and wear resistant.