Ultimate DIY Carbon Scruber Under $100 Fan and All

do you have a outake fan? or just this oder scrubber? and do you have an intake fan? im really interested in making one of these but i have to know.
 
I think a bath fan is rated for only 50 cfm and prob won't be powerful enuf to push air thru the carbon filter....plus some of them can be pretty loud.
 
Im confused how the carbon filter actually fits in the box. It looks as though the home made filter is much bigger than the actual box... also how much carbon do I put in each filter?

Also since when are booster fans CFM rating not accurate? That makes no sense... :-/

please advise
T
 
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