Help choosing carbon filter size

Ok guys I built a wood box to flower in that is 8' long 3' deep and 6' tall. I was wondering if a 6" 440cfm fan and 14" carbon filter would do the job? I bought my light from gotham hydroponics on ebay and they are great guys with awesome products!

Here is a link to the different fans/filters they have.
http://stores.ebay.com/gothamhydroponics/Fans-Filters-/_i.html?_fsub=2502297018&_sid=122824148&_trksid=p4634.c0.m322

I was thinking about the 6"x14" combo for $140??

i was gonna recommend HTG but theyve got basically the same prices.

IF you got the extra cash go for the 6x22 if not it wont make that big of a difference

Maybe cut its like by 306 months

8x3x6= 144 cubic feet. That setup will cover it and more, buy......do it now!

Make sure yo buy yourself a Speedster variable speed adjuster for your fan. You can have it at 25% to 50% and it will still be effective. Otherwise you will suck air fast than the filter can clean it. It will run nice and quiet also at that speed

Lol thanks guys.. I am going to buy the 22" like budbro said. Only $20 more!!

Yes that would be a better pair!

I'm running a 22" Phresh with a MaxFan dialed waaay back using a variac. It's an excellent combo for my 4x4 tent. I got the larger filter because it was on sale. I'm pleased with it. cn