The replacement flap for the Trixie cat door is a practical solution for cat owners who need a functional and durable cat door. With dimensions of 14.7 cm in width and 15.8 cm in height, this flap is specifically designed for the free-running door #3869. Made from robust plastic, it offers a reliable and weather-resistant option for your cat's access to the outdoors. The brown color blends harmoniously into various environments, providing an appealing look. This replacement flap is ideal for maintaining the functionality of your cat door while ensuring your cat's comfort. It is easy to install and allows for smooth access, giving your cat the freedom to explore nature at any time. The use of high-quality plastic ensures a long lifespan and resilience against weather conditions. Thus, this replacement flap is a sensible addition to any home with a free-running door.