Or making the intake closest to the exhaust smaller than the opposite one.
Run a funnel around your passive intake. You wouldn't run a light without a reflector, why run your fan without the same priniciple.
Are you referring using a bell-month opening?
I have incorporated two of these in my cabinet one on the Cool tube inlet and the other on my fan inlet by using round diffusers. works great!
Hey guys,
The plants don't need very much air exchange and over 1 ACpM will cause unnecessary stress.QUOTE]
Kind of curious where this comes from? Trying to understand how it might be true and it just doesn't make any sense?