4-way locking system: entry, exit, entry and exit, complete locking, easy control of your cat. keeps stray animals away. Simple installation, suitable for wood, PVC, UPVC, walls and glass doors. Clear waterproof flap with mute closure. Durable plastic frame with manual four-way locking. Excellent quality: Please note this item is suitable for cats and dogs under 7 kg. Total size: Width: 20.3cm, Height: 22.5cm, Depth: 3cm. Please refer to the size reference image. Product 4-way manual lock allows you to easily control the your cat's access by placing the door on entry-exit, entry-exit, entry-exit, and fully locked, keeping other intruders out. Excellent Quality: Made of durable, water-resistant ABS plastic, easy to clean and install. With the cat flap, your cat can have a little freedom to go in and out and everything is under your control. About our services If you have any questions, please leave a message, we will reply you within 24 hours and provide you with the best service. If you are satisfied with our products, please leave us your comments and criticisms, we will thank you for your encouragement. Note: The data is all manual measurement, please allow 1-3cm error; due to the difference in light and display, there would be a certain difference in color, please refer to the actual object received.