On the top of my stove, there is a set of louvers that direct the air flow from the exterior sheet metal of the stove body. Those louvers are not really the surface of the stove, and have air blowing out from under them. There isn't really any other surface the is the "real" surface of the stove. Any reccomendations on where I would put a thermometer? Here's a good pic of the Osburn 1800i...(my install isn't really complete yet...I don't have the surround installed yet.) http://www.osburn-mfg.com/product.aspx?CategoId=7&Id=245&Page=photo In looking at some of the other inserts, (lopi, avalon were a couple I looked at) it appears that the "cook surface" is the outside of the actual stove body, so that would be a good place for a thermometer.