Dirtbag
Supporter
- 9,158
- 313
A bigger fan yes, but not as powerful as an inline fan, I'm talking about using an axial fan on the intake. And you dont need a 25cfm fan, but you need a fan that can pull at least 25 actual cfm after calculating for ducting and filter losses. The filter and ductwork will greatly slow down the actual amount of air being moved. A 4" inline fan dialed down to 50% worked well for me as an exhaust in a 3x3 for a while, and that was with a passive 8" intake, in other words, no intake fan.bigger fan on the intake than the exhaust?
so if my tent is 54 cubic feet and I can use 2 mins to change it, I only need a 25cfm fan? that seems way too low. im super confused and backwards now.
And yeah I'd use a bigger intake size UNLESS you are powering the intake with an equal size fan as the outtake, with similar airflow loss from filters on each fan.
A 4" inline exhaust with a 6" axial intake will allow the tent to vent without sucking in the walls in too crazy.
Last edited: