VenTech VT IF-4-B Inline Exhaust Blower Fan with Variable Speed Controller, 190 CFM, 4"

Grow Equipment Climate
1

All you need is to buy this and find a 4" carbon filter to attach for optimum refreshing air.

https://www.amazon.com/VenTech-VT-IF-4-B-Variable-Controller/dp/B00E4WKNAM/ref=sr_1_fkmr2_1?ie=UTF8&qid=1482026766&sr=8-1-fkmr2&keywords=VenTech+VT+IF6%2BCF4-B+Inline+Exhaust+Blower+Fan+with+Carbon+Filter+and+Variable+Speed+Controller%2C+440+CFM%2C+4"?tag=greenrel-20

8 Likes
2

Nice little fan

4

OK. Let us do the math.
4’x4’x7’ = 112 CF
CFM is Cubic feet per minute. So it would require a 112 CFM of exhaust one minute to refresh a 4’x4’x7’ tent. There is no such thing, but a 190 even if only operating at 50% or 95CFM would exhaust and refresh this size tent in approx. 80 seconds.

So; you can disagree; However, the math proves you wrong.

Another note. Any fan size will do. It is only a matter of how fast, or how long a duration is necessary to recycle the tent completely.

This can easily be done with the fan I posted. Good day now, lw :slight_smile:

5 Likes
--<<Ak47 auto>>-- M4
5

My bad. My math was way off then. When I started my project I came up with 448 cubic feet lol. Carry on gentlemen. That’s why I went 8in. I feel kinda stupid now

7

I see where I went wrong. I had done 16 times 28 instead of 16 times 7 ft tall. Thanks @latewood for the correction. That’s why you da team leader!
My ventilation system is exchanging the whole room in a min. Lol

1 Like
8

Most important thing is that we are all trying to help :smiley:
I actually used an 8" inline duct booster fan. No nearly as powerful as an inline vortex. I had it laying around from my old latewoods lab grow era, and it fit tightly into the port. :slight_smile:

Anyway; Glad I could get you the correct formula. That was kind of funny. Peace

Happy holidays all!

4 Likes
9

So me and the cool guys at work had a nice little laugh about this. Hahaha one of them brought me their Fundamentals of HVAC book and suggested I read it before I make an ass out of myself again lol but then takes it back and says just kidding that’s a hundred dollar book lol

4 Likes
10

I have 2 of them and they work great

707×707 201 KB

11

Thats funny. You are an HVAC man…LOL

2 Likes
12

I’ve been in the service department for like 8 years now. As you can tell I haven’t sized a house or room for that matter since I was being trained. Lol

1 Like
13

I have a 2’x4’x7’ two autoflower grow room inside a 35’x25’ basement. Can I use the basement to supply my intake needs, especially CO2? ProPic

14

It all depends on the air quality in your basement. Just a note: That size grow tent only need a 4" exhaust setup if you go that way.

15

So no intake is needed?