In case it's still useful, checking here. But there's one missing bar. Would still block opening I believe but you'd want to make sure it worked to your standards. See picture.
Was great gate in that it fit one side on banister of stairs. Minimum width of opening it would fit is about 39 inches. It extends up to another 4 inches.
Child/pet gate for stairs (Kildaire and 1010)
This offer has been gifted to someone and is no longer available.