My neighbors and I are debating the various safety/design/clearance issues associated with running a horizontal stovepipe through his fireplace. We are not challenging code, merely discussing the code and what it is protecting. We are making assumptions about the temperature range the horizontal stovepipe will experience. Various online resources suggest newer stoves have cooler exhaust gases due to increased efficiencies, secondary burn chambers, etc. Is anybody running a stovepipe thermometer on their F3CB (or a stove they consider equivelant?)? Thanks!