4 Types of Closing: Cat Flap t have 4 closing options: open inward, open outward, two-way open, closed. You won't have to open the door if your pet wants to enter the space. The cat flap makes life easier and your pet free at home. Easy installation - 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 size - M - Frame size: 19.7 x 19 cm , Door size: 16 x 15.7 cm, thickness: 5.5 cm. Very quiet: this door is extremely quiet and offers optimal protection against drafts with 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 visual design: The transparent cover is made of high-strength fiberglass, which protects against UV rays, good transparency, protects against moisture and abrasion.