I am just going to start a thread and put pictures in here of stuff we do.
Save starting a new thread each time and keep them all together. If this is wrong then feel free to scratch it!
Heres a couple from a new house we did rough in on a few months ago. Did the final today. Hybrid system Infinity ICS gas furnace and 19seer heat pump.
Only a couple pics of some ductwork. Rest of them didn't turn out for crap.
The t fitting, or pair of pants, whatever you want to call it. 30x12 in, 22x10 and 25x10 out, 2" rise.