4 Switching Modes Cat Door: The cat flap has 4 independent modes—swing out only, in only, both in and out, and fully locked—providing full control over your pet's access. No need to open the door manually when your pet wants to enter or exit, offering convenience and independence for your pet. Size and Application: XL size with outer dimensions of 9.6 x 11.2 x 2.16 inches (W x H x D) and inner dimensions of 7.87 x 8.66 inches (W x H). Suitable for cats weighing up to 27.5 lb and with a waist circumference under 24.8 inches. Compatibility and Installation: Designed for use on brick walls, wooden doors, PVC doors, metal doors, interior and exterior doors. Can be installed in doors and walls with thickness between 2 and 5 cm. Includes detailed installation instructions and illustrated guides. Quiet and Secure Design: Features a silent operation with a special seal and magnetic closure for optimal draft protection. The brush strip reduces noise during use. Ideal for most cats and small dogs such as Pomeranians, Yorkshire Terriers, Pekingese, and Dachshunds.