Phresh Filter, Passive Intake?

[xeamonk]

If im venting (exhausting) a tent with 4" duct fan (190cfm) and filter, what size phresh filter should I use for passive intake?

do phresh filters work well as passive intake filters in tents?

 

[1diesel1]

Why not scrub your tent?

 

[xeamonk]

I want to scrub the exhaust air but also filter the incoming air. I'm doing it in a basement and I dont like how it smells down there sometimes. I just edited the post for clarity sorry if i left anything out

 

[Smerb]

Clean the air up coming inside the tent first, exaust the crap in the same fassion. At the moment my tent is kinda tight , if ya know what I meen.

 

[xeamonk]

i think im going to try the 8x12 (460cfm) because its only $62 on amazon. phuck it! phresh filter it is!
i basically just dont want too much negative pressure and my tent sucking in at the seams, if the filter is way over sized i dont think it can hurt. i have a mini tent i can also feed with it.
anyone here build a furnace filter box? ill pay the 60 for now until i can build myself a good box filter