Pet Dog Window Door Clear Round Flap Door with 4-Way Lock and Liner Kit for Cats Dogs Puppy Great for Screens Sliding Glass Doors Glass Windows 【4 WAY LOCKING (IN, OUT, IN/OUT, LOCKED)】 The cat flap is designed with four patterns, can be locked by a switch, a simple swing, just inside and outside and fully locked, easy to control your pet and more; with pet doors, so you don’t have to constantly close and open doors to wait for your pet’s glass doors, glass windows; suitable for all glass applications; Your pet will immediately fall in love with the stylish Cat Flap 【Quiet and Convenient】Two-Piece with Cat Flaps; Door brush strips eliminate door closing noise and inner rubber ring protects cats from harm; Quiet action won’t startle pets or disturb owners, allowing cats to use their litter box freely 【DURABLE AND WEATHER RESISTANT】The whole cat door is made of durable, weather-resistant PC plastic, with a preference for convenience and ease of use; Sturdy construction ensures an almost