Product review (5 stars): These are GREAT!
These burner covers are exactly what I wanted!  I read all the reviews and will take them all into consideration, and I'll pay it forward by adding my own thoughts, i.e. I will not stand on the burner covers thereby bending or denting them.  I will not (as per instructions) put them in the dishwasher.  If they should get rusty or yellow as one reviewer complained, I'll buy a can of Rustolium paint (withstands extremely high temperatures) and repaint them.  Being a designer, I knew there are umpteen shades of white and didn't expect them to exactly match my white range, but they look a whale of a lot better than the ugly old fashioned coils.  I will certainly be careful not to turn the unit on under the cover.  (I think this comes under the heading of "DUH".)  What a pleasure to be able to wipe them off instead of having to spend twenty minutes scouring all the drip pans when I fry something.  One other thought is that leaving them in place when the oven is on MIGHT alter the oven temperature if it prevents proper venting.  I haven't checked that yet.  And if for some reason they don't last forever, for this little cost, I could buy another set in six months and not regret my purchase for a moment.  Buy and be happy!