The Gateway® uses the #1 rated pressure mounted system. It installs quickly without tools or hardware. A special guage included with the gate tests for recommended pressure. This ensures the gate is securely installed, yet allows an adult to easily release the handle using one hand. The gate door opens in either direction while the frame remains firmly installed. Constructed of tubular steel, the basic Gateway® is designed for openings 30" - 36" wide. The gate stands 29½" high. Available in White.Optional Extension Kit- Model G5.5 - 5½" Optional Extension Kit: Extends gate to fit openings up to 41½". No more than one extension kit recommended.