4 types of closure: Cat flap t have 4 closure possibilities: open inwards, open outwards, in both directions open, closed. You will not have to open the door if your animal wants to enter space._x000D_ makes life easier and makes your pet free at home. _x000D_ Easy installation - cat flap is suitable for brick walls, wooden doors, PVC and metal doors and can be installed on doors and walls 2-5cm thick. The cat flap is made of durable, tough ABS plastic_x000D_ weatherproof and easy to clean. _x000D_ Home door size - M - Frame size: 19.7 x 19 cm, Door size: 16 x 15.7 cm, thickness: 5.5 cm. _x000D_ Very quiet: this door is extremely quiet and offers optimum protection against drafts with a special seal and magnetic closure. The brush bar eliminates noise when opening and closing the door. Agrees_x000D_ to most cats and small dogs (Pomeranian, Yorkshire Terrier, Pekingese, Dackel, etc.). _x000D_ 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.