Product review (5 stars): In a pinch, these will work!
I have a 40" Kenmore Elite gas top/electric oven range and some of the grates lost a few feet.  These Viking feet were the same height but the stem that fits into the grate bottoms is slightly smaller than the Kenmore's (which you can't get anymore).  I used an rubber like adhesive to make sure they stayed in and so far they seem to be working just fine.  For the price, I'm not going to sweat losing others later as 16 feet, to me, was a deal.