An exclusive patented design: Designed specifically for pets, the NAMSAN pet gate door provides a separate entrance and exit to facilitate easy access for your pet. Size: Outer frame: 9.8 x 12.4 inches, inner door flap: 9.6 x 8.2 inches. Made of high-quality material, it is wear-resistant, temperature-resistant, and built for long-lasting use. Comfortable for daily use: Ideal for balcony doors, allowing pets to go in and out without requiring owners to repeatedly open the door. Provides a dedicated pet entrance without affecting the normal use of the screen door, while also offering protection from mosquitoes and insects. Easy to use: Magnetic closure at the bottom ensures the door closes automatically. Lightweight design allows pets to push through easily. Simple to understand and use. Locking mechanisms on both sides of the door enable full closure and control over pet access. Suitable for screen doors, windows, and other screened areas. Includes installation instructions for quick and easy setup. Note: The inner flap does not include a grille; you will need to install the cut-out grille into the frame of the pet door.