High quality material: The pet flap is made of high quality ABS material, with smooth surface, very strong and quality assurance. 4-way lock: The cat door with lock has 4 switch modes. The cat door can be adjusted by the red and green switches with labels. Can be set to OPEN, ONLY, SORICALLY or fully locked, easily adjustable, which makes it easier to maintain your pets in or out, provide more freedom for your cat or small dog to come without disturbing you. Thoughtful Design Transparent Visibility: The transparent flip cover that most pets love, let your pet through the door. The outer screen is for waterproof water. The brush strip reduces the sound of closing from the door; Ensure that animals and owners will not be disturbed. Easy to install Cat flap door: Full instructions included, Durable, weatherproof pet faucet with interior telescoping frame, you can easily install in windows, doors, cabinets, etc. Pet cat and dog size: Outer diameter: 26cm, inner diameter: 20cm, thickness: 6cm.Suitable for all occasions, such as: glass, metal doors and windows, wooden doors and windows, various windows, etc. Product Description If you have a feline in your home, you know how tedious it is to open doors when your cat wants to use the litter box or when she wants to move out. The ultimate solution to this is a cat door, as after installation, you no longer need to manually open your cat's door. With flexible cat door operation, you just need to move your finger and toggle the red and green switches on the cat door: free entry, entry only, exit only and four mode locked, after the cat passes through the cat.Door, the magnet at the bottom will return it to its original position.You don't have to open the door.You also prevent unwanted behavior from your cats like scratching on the door or walls, excreting in the house. Product Parameters:Name: Cat Door / Cat Flap / Dog FlapMaterial: High Quality ABSThe Color: BlackSizes: Outer Diameter: 26cm, Inner Diameter: 20cm, Thickness: 6cmSuitable For: Cats, Dogs, Kittens, PuppiesApplicable Places: Suitable for all panes of glass and thin Installation: easy to install, with instructions and all installation tools