Hi its the stove nut with another question. I'm yet looking into another used wood stove to add to my collection which my wife is taking well. It's a Consolidated Dutch West Federal model, older I believe because it goes from oval to round. Are the new ones only round? The round is 6" but I'm wondering if its not reduced from a larger oval. Code here in Southbridge, MA is that you can not go from a larger stove pipe to a smaller flue size and I only have a 6" flue which I will always regret not going to an 8" but I didnt see a need for at the time, so I'm trying to determine if the Federal model is a true 6". Also if it is, does it come with an optional spark screen for fire viewing? Thats really what I am looking for and it doesnt have to be a Con Dutch West. I think that one of the Vermont Castings stoves can be either a 6 or 8" with an optional screen but can only be used if you use the 8" because of the draft I guess.