According to their website and catalog, the Fireview has an emissions rating of 1.3 gr/hr and the Classic 3.5 gr/hr. I thought they were identical stoves except for the glass? Why such a difference in emissions? Also, I saw a video (http://www.youtube.com/watch?v=Np71Xpojs_Q) of a Classic, and the loading door on the side appears to have glass in it. I can't find any info on the website about this option. No longer available? Custom made?