Class A 6" Chimney Pipe Install - Can I go up at an angle on the outside?

[Copperbk]

Have a question regarding a through the wall installation that I am undertaking. I can't go straight up and out because of some structural issues but was wondering if I'm going through the wall can go up along the outside wall at a slight angle until I reach the box out for the enclosed chimney and then head straight up. It is about 6 feet from the point where the new chimney is going out of the house. Is it possible to go up on a 30 degree angle til I reach it or will it reduce the draft too much? Any words of advise would be much appreciated.
Thanks

 

[begreen]

Welcome. Yes you can do up to a maximum of a 30 deg. offset with class A pipe, but only certain manuf. let you do this if it is exterior class A. Selkirk says no, DuraTech says yes. Whatever pipe, brace it well.