High-Quality Materials: Built with a sturdy metal frame and frosted PVC door flaps, this flap pet door is designed to withstand wind, rain, and cold, making it ideal for all weather conditions. It offers long-lasting and reliable performance. Fits Various Wall Thicknesses: Our dog door is suitable for walls with a thickness of 4.75'-7.25'/12.07-18.42 cm, and it comes with a detailed installation guide and all necessary hardware. Even beginners can install it easily and quickly. Effortless Pet Access: Featuring a unique hinge design on the flaps, this pet door for dog allows for smooth and easy opening and closing. The magnetic closure ensures quiet operation while maintaining a tight seal to block drafts and noise. Enhanced Security Features: Equipped with a locking mechanism and a metal plate design, our doggy door provides extra protection to avoid unwanted animals entering your home. You can enjoy peace of mind while allowing your pet freedom of movement