Product review (4 stars): Great product, but not easy to install.
This happened to fit perfectly for me, but if your gap's width isn't within the 30"ish range, it will not work.
I made a paper template of the triangular edge of the metal bracket, taped it to either side of my cabinet, taped the little metal bracket to it, and drilled the holes. It wasn't easy, especially without pulling out the stove. But I think the template is key. After all is said and done, it looks really good.