Unique Arched Design --- The cat door adopts a lovely arched design, which is both beautiful and functional, adding a unique view to the door. Bring the animated Fairy Door into your home.69" x 10" (W x H), suitable for installation on doors and thin walls, suitable for cat lighter than 20 lb and waist circumference shorter than 21". Strong and Durable --- Made of ABS material, weather-resistant, smooth and durable surface, no smell. Available in a versatile white color, it can be easily adapted to any color door. Size Application --- Outer size 9.41" x 11.38" x 2.56"(W x H X D), inner size:6.69" x 7.36"(W x H), cut-out size: 6.69" x 10" (W x H), suitable for installation on doors and thin walls, suitable for cat lighter than 20 lb and waist circumference shorter than 21". Window on Door --- Arched cat door with four mesh screens. Cats can see the outside through the window, preventing two cats from colliding when they open the door at the same time.