I have the zero clearance fireplace Napoleon nz6000 high country. It is not EPA certified (exempt) and when i installed it 2 years ago it had not published any grams/hr. Now the website is showing 5.4 grams/hr. I guess it took them awhile to have it tested. I was wondering how those numbers stack up against an EPA certified fireplace? Overall happy with its performance after a steep learning curve. tried to post pics of the install but just can't master the art of gettting photos posted here even after reviewing the website directions. I'll keep trying to get the size reduced below 450KB to make it work. Thanks