A few misc items have to be completed still. I was looking to learn more abou the trade so I decided the best way to learn was to dive in. I have to change the drip leg I know and finish some insulating. The plenum has a 10" inch duct coming off each side for the trunklines. Trane xr90. Not perfect but good for zero experience. A lot of research. Looking to start taking classes at local trade school.