They actually sell baffled lightproof louvres for darkrooms. Here's a link:

http://www.bhphotovideo.com/bnh/cont...ughType=search

I had to use two of those with a 6" 440 CFM centrifugal fan to provide enough airflow.
jamstigator Reviewed by jamstigator on . closet air ventilation... im plannin on usin a closet next round.. ive figured im gonna cut a hole in the ceiling for the air exhaust, bit what about the intake is there any way to evan have an intake thats stealth? ive been thinking about this for a few days and havent come up with any ideas to keep it stealth.. thanks for any input.. Rating: 5