Thanks dat.
Phresh filters website says the filter is fine either way.
So what Im doing is pulling air through the lights, with the fabric filters on the ac hoods you see, and pushing it out of the carbon filter, all of the hot (so much airflow its practically "warm")air is pushed directly to the ac through those slots via positive pressure. The boxes have a 4" opening each for pulling fresh air into them,,, I can direct that fresh air to any location in the boxes by using ducting, my extraction fan is powerful enough to where I dont need intake fans for this,, the doors pull themselves closed from the negative pressure.
So, into 4" opening in box through ducting, mixed around the grow area then into the 6" aircooled hood, then from 6" ducting to the 8" fan via an 8x6x6 Y ducting connector, and pushed through the filter and to the window a/c... If my filter cant keep up with smell I'll toss some ona gel in that box its in
The building these grow boxes are in has a 4" fresh air intake with a 4" carbon filter to keep any unwanteds out, not for smell.
Edit:
A little preview of things to come
View from the veg area. (lwh = 8x3.5x3.5) 6 foot light rail.