Ultimate DIY Carbon Scruber Under $100 Fan and All

I'm wondering, has anyone tried this with a bath fan? It seems like they would be the actual CFM they are rated for.

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.

I did research and you can buy them up to about 200 cfm.
example
110 cfm at this link
http://www.homedepot.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=10051&langId=-1&catalogId=10053&productId=100020509

also you can buy "untra quiet" ones and all have sound ratings in somes listed.

sorry for bringing back an old post, but where can u buy the plenum box with 6" adaptor?

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