High quality material The PET flap is constructed from high quality ABS and PP materials with a smooth surface, providing strong structure and durability. Quality assurance is included. 4-way lock The cat door offers four switching modes. It can be adjusted with the red and green labeled switches. Options include in-only, out-only, in-and-out, and fully locked, making it easy to keep pets in or out and to give your cat or small dog freedom without disturbance. Thoughtful design for visibility The transparent flip cover lets your pet see through the door. The outer screen is waterproof. A brush strip reduces noise when the door closes, helping to keep both pets and owners undisturbed. Easy installation Full installation instructions are included. Durable, weatherproof pet flap with an inner telescopic frame for easy fitting in windows, doors, cupboards, and other openings. Use scenarios - Provide controlled outdoor access for cats or small dogs, with in-only or locked modes at night to prevent entry. - Restrict access to certain rooms (such as bedrooms or kitchens) by using in-only or locked settings while still allowing occasional passage. - Suitable for installation in windows, doors, cupboards, and other openings, enabling flexible placement in homes, apartments, or small houses.