pelt1
Well-Known Member
Your cab is 3 x 3.3 x 1.5 in feet.
Cubic feet that is 14.85 Cubic Feet. So to exchange the air once per minute, you would need a fan that moves 15cfm.
You want to exchange the air at 3-5 times per minute. So let's figure 5, so 5 x 15cfm is a fan that moves 75cfm. So that should give you an idea of what a 250cfm fan would do for your grow space.
All the above is theoretical assuming no restrictions of any kind of course.
Cubic feet that is 14.85 Cubic Feet. So to exchange the air once per minute, you would need a fan that moves 15cfm.
You want to exchange the air at 3-5 times per minute. So let's figure 5, so 5 x 15cfm is a fan that moves 75cfm. So that should give you an idea of what a 250cfm fan would do for your grow space.
All the above is theoretical assuming no restrictions of any kind of course.