Practical and budget-friendly solution for interior cat door installations Thin, translucent acrylic flap for seamless integration with your home's design Four-way locking system allows in-only, out-only, completely locked, or unlocked settings Ideal for keeping litter box odor contained and away from unwanted areas Compatible with various door materials including wood, storm, PVC, panel, or metal Discover the convenience of the PetSafe Indoor Cat Flap, a simple and cost-effective solution for providing your cat with interior access to their litter box or feeding area. This versatile cat door is designed to fit solid core wood doors commonly found in homes, and its translucent acrylic flap allows for comfortable use and easy adjustment. Choose from a two-way or four-way locking system, depending on your needs. The two-way lock can be set to completely locked or unlocked, while the four-way lock offers in-only, out-only, completely locked, or unlocked settings. This practical indoor cat flap helps minimize litter odor and is perfect for preventing dogs or kids from accessing restricted areas. Installation is a breeze, as the PetSafe Indoor Cat Flap can be easily installed in any wood, storm, PVC, panel, or metal interior door 1/2" - 2" thick. A cutting template and screws are included to make the process even more straightforward. This indoor cat door is suitable for cats up to 15 pounds. The PetSafe Indoor Cat Flap is a great value for its price, offering an effective solution for their cat's needs. Its design is best suited for indoor use, as the flap provides minimal insulation and wind resistance. The PetSafe Indoor Cat Flap is praised for its easy installation, effective odor containment, and adjustable locking system. The cat flap is perfect for preventing dogs from accessing the litter pan and helps control your cat's movement.