Working on my box design shooting for 3.5 net cf. Single 15 8 inch port with a 90 degree bend. My question is how will the bend affect the length when calculating for port length?
If it is a short radius 90 then I would not worry to much as it will add an 1" or maybe 2" not a big deal. Long radius 90 (which i doubt you would use here) could add several inches.