Product review (5 stars): Fit correcly. Pots are stable.
Fit correctly on our Whirlpool cooktop, unlike the standard A or B types available locally.
Not having replaced drip pans in a couple of decades, I bought one of the standard sizes based on measurements. The small ones were fine, but the notched on the 8" pans did not line up with the supports on the elements. The elements, along with pots, tilted sideways if I wasn't careful. Finally decided to try the other size. Those had the same problem. After some searching, I found this page.
The problem was getting the model number of our cook top to verify which would fit. There are cabinets under the cook top that made seeing the labels on the underside of the cooktop difficult. Could see the wiring diagram but not the model number. Finally got the idea to slide my phone into the space under the labels. Thanks to the camera button on my old windows phone, was able to snap a flash picture of the model label. I suppose a self timer would have worked.
Ordered these as an add on to some olive oil and had them the day before Thanksgiving.