I had the same thought (about not being over a burner), but it is an official weber accessory so who knows.

I also saw some of these:

http://www.amazon.com/Outset-QS77-Stainl...20274196&sr=8-1

http://www.amazon.com/Grillfinity-510101...20274277&sr=8-9

I wonder if those would fit between the cooking grates and flavorizor bars?

-David