4-way switch mode: The pet door uses two tabbed switches to deliver four configurations: output only, input only, both input and output, and fully locked. This provides precise control of your pet’s entry and exit. Size and application: Outer size is 10 x 9.6 x 1.8 inches (W x H x D); inner size 6 x 5.9 inches (W x H). Suitable for installation on doors and thin walls, and designed for cats and dogs. Easy installation: Includes screws and caps with detailed installation steps. This large cat door can be installed quickly on doors, cabinets, panels, or walls. Safe and thoughtful design: The transparent flap allows your pet to see through. A quiet brush reduces noise when closing. The 4-way locking meets daily needs. The flap includes magnets to help reset quickly after a pass. The inner frame edge is polished for a smooth finish. Use scenarios: - Allow a cat to move between rooms via an internal door while keeping bedrooms off-limits. - Install in a thin wall or cabinet panel in apartments or homes with space constraints to create a discreet pet access point. - Manage access for both cats and dogs to restricted areas by selecting the appropriate switch configuration.