According to TV History Channel  NOVA the stove impacts us little today and is not important  The stove is difficult to make work correctly  The complicated flue will back smoke into the room if not operated just right  As a result the design was never popular even in Franklins time and quickly fell into disuse  I dunno if theres a connection between the Franklin Stove and boxshaped fire boxes used today  I dont recall any mention of the fact on the TV special