Meaning, I've pretty much built my exhaust system from the work table to the inside wall but I've yet to cut my hole to the outside yet. I don't know how I want to protect the exhaust duct from outside elements...
Blast Gate (Blast Shield): I'm probably going to put a blast gate between the inline fan and the exterior wall so I can seal everything off when I'm not working. I've ordered this one:
http://www.blastgateco.com/Cast-Alum...last-Gates.php
Dampeners: are not something I want because it reduces airflow
End-Caps/Register boxes: so what do you guys put on the exterior walls of your studio? If I use an dryer-style end-cap (even one without a built-in dampener) should I be concerned about airflow restriction?