Originally Posted by JayIsrael
So in your example wouldn't the physical port length be 11.75 not 14.75? I'm sorry for all the questions, Im just tryin to understand!
Sorry, I was recalling the length before looking at the picture.
Yes, the physical length is 11.75. Add to that the 2 x .75 of the double baffle and you have 13.25, plus the further drop and right turn of 2" each, and .75 for the port material. That's 18" which is what Torres calculates.
(Torres says the physical length is 12.5, but it doesn't take into account one of the baffles. It assumes the second baffle sits inside the port panel)