Here is one of the dumbest question I'll ever ask, and I'm pretty sure I already know the answer. Anyway, I don't mess around with aero ports ever, and was curious when entering the port dimensions into Torres, when I enter let's say, 16 inches. If I have 2 entered into the number of ports field, does that mean I only need 16 inches TOTAL length, or 16 each? Sorry for a dumb question, but I'm assuming it's total length so when I use 2 ports, the length is cut in half.