Product review (5 stars): 5 stars for speed of shipping, quality and ease of installation
I purchased this unit to replace the element in my Jenn Air electric oven as the web suggested this as the replacement.
I give it 5 stars for speed of shipping, quality and ease of installation.  The unit however is made for a standard width oven and ours is a wider version so the size match up to the old element is not exact.  It however installed and functions perfectly.  I have not noticed any unevenness with the difference in heat distribution, etc.
This is a "plug and play" installation.  Turn off the power, two screws from the mounting plate, unplug the old unit, plug into the new unit, replace the screws (I had to find two slightly larger screws as the holes were poor on the stove-a Jenn Air issue), turn the power back on and go!  Note: I did have to bend the flexible base cover plate the holds the screw mounting so that the element sat flat on the bottom of the stove.  That was a simple thing to do and probably should be tried in before screwing it down so that the element is properly supported on the "feet" that are on the element.
Good Luck!