Easy Access & Keep Odors Away: Create a private getaway for your cat in the laundry room, pantry, basement, garage, etc. Keep litter box smell out of your living room and away dogs and cat’s babies food. 4 Way Switch Mode: The cat flap can be adjusted by the red and green switches with tabs to 4 modes: exit only, entry only, entry and exit, and fully locked, easy entry and exit control the exit of your pet. Wide Applications: Wide Applications: Size 30 x 30 x 4cm, cat door hole for most types of cats. It can be used on a hollow chamber door, a solid door and even a glass door. Close the door so that the baby can’t get into the basement room and get kitty litter. With this cat door, cats could go in and out freely and wouldn’t scratch the basement door, laundry room door, bedroom and bathroom Easy to install: Complete instructions included, allow you to easily install it in windows, doors, closets, panels and walls, etc.