I have an existing zero clearence fireplace in our 10 year old house that is framed into a chase. After talking with a local reseller he said that the 1800i would probably fit, although tightly. Also the existing fireplace opening is 8" off the floor level and so I will have to support the 1800i on the front. The local reseller mentioned that I could just make some type of a metal shroud for the bottom. I am a mechnical engineer with a seat of solidworks and have designed alot of parts out of sheet metal. I feel very comfortable designing a skirt for this purpose, but not really sure what I can use for material or paint given the heat that the wood stove insert gives off. Will standard 14 gage cold roll steel work, and can I just use a black powder coat paint job? Any input would be greatly appreciated. Regards ...... A guy with tons of wood but a very innefcient fireplace.