Spacious flap opening accommodates bigger cats and small dogs for comfort and ease of use 4-way locking system provides optimal security and convenience, allowing control over your pet's access Compatible with wooden, PVC, metal, and glass doors and windows for flexible installation options Transparent flap design ensures quick pet adaptation and visibility for a smooth transition Neutral color integrates effortlessly with your home's existing décor and style The PetSafe 4-Way Locking Big Cat Door is designed for enhanced convenience and flexibility for both pets and their owners. This spacious cat door features a generous 7 1/8 in x 7 15/16 in flap opening, perfect for larger cats and small dogs, ensuring their comfort and ease of use. The lightweight, transparent flap allows for easy pet use and quick adaptation. One of the key features of this big cat door is the 4-way locking system, which offers customizable access control. Choose between open, closed, in-only, or out-only settings to manage when and how your pet can use the door. This is particularly useful for keeping dogs out of your cat's designated area or for controlling your pet's outdoor access during specific hours. The PetSafe Big Cat Door is versatile and compatible with a range of door and window materials, such as wooden, PVC, metal, and glass. Its adaptability allows for easy DIY installation on interior or exterior doors and windows. The neutral color seamlessly blends with any door or window frame, adding functionality without compromising your home's aesthetic. Upgrade your pet's freedom and convenience with the PetSafe 4-Way Locking Big Cat Door. Its spacious design, customizable access control, and versatile installation options make it the ideal solution for pet owners looking to enhance their home environment for their furry companions.