4-Way Locking: The biggest advantage of this cat flap door is that the two-button lock can offer 4 modes: open, lock, in-only (cats can go in but can't go out) and out-only (cats can go out but can't go in); After installing this cat door, you no longer have to worry about pets going in and out to open/close the door Low Noise & Safety: There are brush strips on the edges of the flap doors for interior doors, which can reduce the noise generated by pets when cats go in and out of the door; In addition, the silent movement will not scare the pet or disturb the owner due to the magnetic control Durable Material: This cat flap door was made of high-quality ABS plastic, it is sturdy and weather-resistant; The transparent surface is also easy to clean Suitable for most small pets: the size of the cat flap door is 30 × 30 × 4 cm / 11.8 × 11.8 × 1.6 inches, and the size of the flap is 18.5 × 20.5 cm / 7.25 × 8 inches; It is suitable for all breeds of cats and some small dogs up to 6 kg / 13