The cat flap is embedded in the door to allow your cat to enter and exit while keeping tails from getting caught in the door. Four operation modes for flexible control: enter only, exit only, entry and exit, and lock. The simple, convenient operation makes it easy to manage your pet's movements. Made of quality ABS material with strong weather resistance and a smooth, durable surface. Suitable for most cats and puppies and compatible with hollow doors, large doors, and even glass doors. Distinctive cylindrical design with cat ear accents. Not only a functional door, but also an interior decoration that adds charm to your space. Easy to install and maintain, combining practical function with stylish looks to suit various home interiors. Practical use scenarios: In a multipet household, control which rooms your cat can access while allowing easy inandout for supervised play or rest. Install on hollow or large doors to create a convenient transition between rooms, or on glass doors to preserve visibility while offering pet access. Use the lock mode when you need to restrict access temporarily (for example, during cleaning, travel, or nighttime) without removing the door flap. Compatibility and versatility: Works with most cats and puppies, accommodating different sizes within a broad range. Suitable for interior doors as well as exteriorfacing doors where weather resistance is required.