Sliding Door For Furry Friends: The built-in sliding pet door measures 8.9 x 10.6 inches and can be locked or unlocked by the knob. You can customize the opening size to fit your pet's size to give them unrestricted access in and out while keeping your baby in a safe area instead of sneaking out. This feature is helpful for potty training and forming eating routines, and separating pets can prevent potential fights. Extra Wide For Multi-scene Use: Includes two extension pieces that can fit openings ranging from 43.7 to 48.4 inches, while the main gate measures 29.5 to 34.3 inches. It can be used in doorways, hallways, and on stairs both inside your house and in your garden. Additionally, you can place the gate in areas where you keep cat food or litter, or beside a dog litter box. One-handed Operation: If your hands are full or you are holding your baby, simply lift the buckle to open the gate. The gate will automatically close when the opening angle is less than 90°, so there's no