Pet Flap Door with 4 Way Security Lock for Dog Cats in 4 Sizes

Four Versatile Modes: Completely closed no entry or exit). Completely open free entry and exit). Entry only cats can enter but not exit). Exit only cats can exit but not enter). Function Instruction of the Switches: No Entry/Exit: Turn Red and Green switches to both sides, pet is prevented from entering or exiting the house. Entry Only: Turn Red and Green switches to the right side, pet is allowed to enter the house but cannot exit. Exit Only: Turn Red and Green switches to the left side, pet is allowed to exit the house but cannot enter. Free Entry/Exit: Turn Red and Green switches to the middle, pet can enter and exit at any time. Features: Easy Installation: Simple and elegant design, easy to set up. High Quality: Made from durable ABS plastic for long-lasting use. Spacious Size: Generously sized to accommodate larger or overweight cats. Outer Door Frame Size: Small: 20x19x2cm. Medium: 20x19x5.5cm. Large: 25x23.5x5.5cm. Extra Large: 27.7x25x5.5cm. Inner Door Frame Size: Small: 16x15