🐱Size & Applications: Outer Size: 11" x 9.8" x 2.2"(H x W x D), Inner Size: 8.7" x 7.9"(H x W), Cut-Out Size: 9.5" x 8.3"(H x W). Suitable for cats lighter than 22lbs(doggies 17.5lbs) and waist circumference shorter than 29.5". Before order please measure pets' weight and waistline. 🐶4 Switch Modes: Easily move the red/green switches, the cat door provides 4 modes to lock: free access, in only, out only and locked. It can be installed on interior/exterior doors, windows, wall and cupboard. 🐱Weather-Resistant Brush: The brush on flap will effectively prevent rain, wind, snow from entering in. Defend cold and keep warm. It also keep silence after passing! 🐶Easily Install: To meet the need of different doors and wall thickness, long/short screw sets are provided. Each set has 8 screws. The depth of the tunnel can be cut as your need. 🛒Transparent Flap: The flap is transparent to let pet see through the pet door and help train the pets to pass through the flap easily. Ycozy XL Cat Doors Outer Size 11" x 9.8" 4-Way Locking Indoor Pet Door for Interior Exterior Door Wall Window, Weatherproof Cat Flap for Kittens & Dogs Easily Install