General description This upgraded version of the cat flap features four control methods: open inward, open outward, open in both directions, and locked. This allows you to manage your pet's movement without needing to open the door. The flap is designed for small dogs and cats of all sizes, providing a convenient way to control their access. Technical specifications Material: ABS, safe and non-toxic Thickness compatibility: 2 to 5 cm Available sizes: S (2 cm thick), M (5.3 cm thick), L (5.3 cm thick) Recommended waist circumference for pets: S - less than 15.5 inches, M - less than 15.5 inches, L - less than 23.5 inches Installation Suitable for installation in brick walls, metal doors, wooden doors, and PVC doors Includes a detailed installation diagram Installation time: only a few minutes Usage Windproof design with a brush strip to reduce noise and clean debris Transparent middle flap for easy observation of the outside Other information