Double-locking system: This puppy gate keeps your pet secure, ensuring they don't go where they shouldn't. Features two rotatable locks on the bottom it can open both ways or in a specific direction. Door automatically closes: When the opening angle is less than 90, the pressure fit stair gate will shut on its own. Steel frame: A durable and strong structure, this dog stair gate stays firm and upright when in use. 74-105cm expandable width: This dog barrier is ideal for different-sized doorways, hallways and stairs. Dimensions: 76. 2H x 93Wcm (extensions included) Extensions width: 10cm and 15cm. Assembly required.