Cat passage opening Provides a dedicated space with an opening sized to permit unrestricted movement for cats while blocking larger pets and toddlers, designed specifically for cats. Adjustable cat door prop Seven adjustable settings allow easy adaptation from kittens to adult cats, making it suitable for growing pets and multipet households. Secure and convenient use Stable design with advanced antipinch functionality for double protection, reducing the risk of accidental pinching while keeping operation smooth for all users. Rentalfriendly setup Fast, tool installation by suspending on door handles, avoiding paint damage and providing an easy solution for renters. Use scenarios In a multipet home with cats and dogs: install on an interior door to let the cat move between rooms while restricting dogs. For growing households: use the seven adjustable settings to accommodate cats as they grow from kittens to adults. In rental environments: deploy without tools by hanging on door handles, protecting walls and paint while maintaining cat access.