When we bought this house 5 years ago, the old Country Flame was already in place. Double doors with glass. The first year, we smoked up so much that the glass was always sooty and dirty. We've gotten much better since then. However, while we were able to get the right side glass door clean, we could never get the left door clean. It's been annoying and I've meant to really scrub it, but I never really got to it other than occasionally spraying it with windex or using newspaper dipped in ash. But this evening I was at Tractor Supply buying stove pipe and remembered to buy coarse steel wool. Got home to a cold stove and sat down and went at that glass for 15 minutes hard. The soot just would not come all the way off. After wiping it down, I noticed that the glass had gotten really silvery and shiny. On a hunch, i grabbed a magnet. Yes, after 5 years I discover the "soot covered glass" in the left door is actually a piece of metal. duuuuuuhhhhhhhhhhhh