Flexible width options: The dog gate adjusts from 74–80 cm without extensions. Add the 17.5 cm extension for 91.5–97.5 cm, the 20.3 cm extension for 94–100 cm, or the 30.5 cm extension for 104–111 cm. Combine extensions to fit 111–117.5, 121.5–128, 124.5–130 or 141.5–147.5 cm openings, making it suitable for doorways, hallways and stairways Automatic closing & locking: Open the pressure mount stair gate between 30° and 90° and it automatically closes and locks behind you, so you can pass through without stopping to pull the gate shut or check the latch. Open it beyond 90° and it stays fixed open, so you can move back and forth without repeatedly reopening the gate One-handed dual swing: The 49 cm walk-through opening and one-hand operation make passing through easier when carrying your baby, groceries or pet. The extra wide stair gate swings in either direction for smoother movement through busy doorways, while either lower lock can be engaged to limit opening to one side Easy double-locking: Two upper buttons must be pressed simultaneously to release the pet gate, creating a simple adult-friendly locking action that is difficult for children or pets to operate accidentally. Once released, the latch closes securely after each use, so you do not need to remember to lock the gate behind you Tool-free pressure mounting: Set up the no drill stair gate between a doorway, hallway or stairway, then tighten the four adjustment bolts until the latch-side gap is 2-3 mm for smooth operation. Note: A larger gap around the latch before installation is normal. Included screws and adhesive pads can also be used for added support