On the one hand, that throbbing effect on the bottom panel turned out WAY worse than I was expecting it too.  On the other hand, though, it actually does look about as gross as the noise sounded/felt.  Seriously, this was, like, “airplane flying overhead” levels of loud.  WAAAAAY louder than the exhaust fan itself.  All because a closet door was shut.  And apparently, if you stood INSIDE it, the sound situation was inverted and it was noisy UNTIL the door was closed.  I understand none of this.

And really, all of this is ultimately just a distraction from how unique it was to have a bathroom with a working exhaust fan AT ALL for once.