Product review (5 stars): Legit product and it works great!
The house we bought had an old Jenn Air stove with the framed cartridges.  Unfortunately due to the size of pots, it frequently took forever to boil water because the pot couldn't rest flat on the coil due to the framed lip.  We had just started looking at new ranges, when we noticed that Jenn Air had this newer type of cartridge with no lip.  On a whim, I called Jenn Air to see if the new cartridges fit older models, and they do!  We found this on Amazon for $50 cheaper than the store and gave it a go.  Not only was it a real Jenn Air unit (not a knock off that sometimes you can encounter buying online), but it fit our stove and works wonderfully!  The coils are small and tight, and it heats up so much faster than the other cartridge!  I'm so pleased!!