I just wanted to get everyones opinions on how how I should vent, cool, and clean the air in a cab! These are the current things I have to do this with: 2) 8"x8" Dark Room Vents 1) 4" Eco Plus Inline Fan 170 cfm 1) 6" Carbon Filter 1) 6" 120 cfm duct fan 1) 24" x 6" Cool Tube 1) about 10' of ducting I've been trying to figure out how I should do this.. I just wanted to see if anyone could give any input on the best way or how they would do this! I was thinking of having the CF up top with a fan up there. Any input?