Heh. Sorry. I thought it was your picture.
So it's a cylinder drawing in through the sides and exhausting out an end?
It could work but 3/4 media will need lots of oomph. You might try stacking fans of identical design. It'll still make the fans work. I tried stacked fans with a different intake approach (large ducted area, but boxed) but was never happy. Ended up moving to slow big fans and thin material and carefully matching intake and exhaust speeds. If I have brutal hot spots then they get pipes or water to move the heat elsewhere. No need to make the entire machine and my ears suffer because of ill-behaved components.
Activated carbon? Trying to keep out the bong smell? 
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There are a vast number of people who are uninformed and heavily propagandized, but fundamentally decent. The propaganda that inundates them is effective when unchallenged, but much of it goes only skin deep. If they can be brought to raise questions and apply their decent instincts and basic intelligence, many people quickly escape the confines of the doctrinal system and are willing to do something to help others who are really suffering and oppressed." -Manufacturing Consent: Noam Chomsky and the Media, p. 195
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