Here is an elegant walk through pet gate that expands to fit openings 30.5 to 37.5″ inches wide, standing 30 inches tall. The Carlson Walk Through Pet Gate comes with a 10 x 7″ door to allow small pets to pass through. It has an all steel design and can be installed in minutes. Each of its pressure mounts can be easily adjusted.
This pet gate has an auto-closing walk through door. It is available for under $60 at this time.