Got the install finished on the CPM just a little bit ago. I think it turned out well and looks good. Hopefully this venting method provides good performance for this unit. I've got a single 45deg. out of the stove adaptor, then the cleanout tee. After that I have a short 12" adjustable section then 9' straight up. It's warm here today so the furnace is off. I'm going to let the RTV cure up for a while before firing her up....if I can wait that long. Fire pics coming soon!!