You never heard of passive intake yet you claim to be Mr Tool Time with your 3 room grow.
Then you clearly show you're a hippocrite by coming back to post a WRONG definition of something YOU stated you never heard of.
Passive intake/cooling MEANS nothing that consumes energy, such as fans and pumps, are used.
Look up Passive House Project, smart guy.
Europe has 25,000 houses and buildings utilizing PASSIVE INTAKE/COOLING to lessen their carbon footprint.
Read a book if you can, called The Solar House: Passive Heating and Cooling.
And let's not forget all the books on growing MJ that mention passive or active (using fans and pumps in case you haven't heard of that too) intake to cool and EVEN heat a grow space.
Now your comparing a commercial op with an individual, small and CHEAP grow space.
You can tell us about all this elaborate duct work you put together, without pics, to cool and control odor yet you can't help design a CHEAP way for this person to solve THEIR problem.
Then you get pissed and call names because the simple design was TOO HARD for you to grasp.
Have you read the post made by others offering simple, cheap AND effective options.
All which include passive intake from under the shed and using a filter, screen and even panty hose (which does work damn well.....lol).
The fact of the matter WeeGogs, is that your WeeBrain doesn't know a damn thing.
You're weak
You're simple minded
You're King Troll
But the real sad part is, you keep refusing to take your meds buddy !!
How long have you been sitting in front of your computer in those same 5 day old underwear and t-shirt ?
Stop yelling at your Mom for knocking on your bedroom door because she loves you and is only trying to help.
Also, Aluminum Foil helmets don't really block the Martians from scanning your brainwaves either, okay !
You need a 7.62 x 39mm in your head, to make those voices go away.
If you need any, I have two.....I mean 2 one thousand round cases of it and will gladly send you 1 round.
Huh ? Oh, no need to thank me.......it's the LEAST I can do !
TTYL........that's called an ACRONYM.......say it WITH me........AH---CRO---NYM.
I SAID NYM, NOT NEEM !!
See, you're not listening again.
Oops, I better let you go now.
It's your bedtime.
Don't forget to put on your Depends before going to bed.
Brush your teeth too, like a good boy !\
Nite Nite................