4-way locking system: in, out, in and out, full lock, easy control of your cat. keeps stray pets away. Simple installation, suitable for wood, PVC, UPVC, glass walls and doors. Waterproof transparent flap with mute closure. Durable plastic frame with four-way manual locking. Excellent quality: Please note that this item is suitable for cats and dogs under 7 kg. Overall size: Width: 20.3cm, Height: 22.5cm, Depth: 3cm. Please refer to the picture for size reference. Product Description: 4-way manual locking allows you to easily control your cat's access by setting the door to in-out, in-out, in-out, and fully locked, while keeping other intruders out. Excellent quality: Made of durable ABS plastic, water-resistant, easy to clean and install. With the cat flap, your cat can have some freedom to come in and out and everything is under your control.