Measuring 19 inches wide with 2.25-inch spacing between the vertical bars, the barrier expands from 29.5 to 38 inches wide to fit most doorways and stairwells. This convenient walk-through door is easy to open with one hand, allowing you to easily open the gate while carrying groceries or other stuff. It has a spring-loaded latch and a lift and open operation to securely keep the gate closed and your pet safe in the desired location of your home. Plus, the safety gate includes four easy-to-set pressure mounts, two additional 3-inch extensions and the necessary tools to assemble.