Carbon Air Filter

I was getting affected by ABS fumes so spent a bit of time looking for a good/cheap [activated carbon](http://en.wikipedia.org/wiki/Activated_carbon) air filter. I decided on [this automotive one](http://www.ebay.com.au/itm/281009061923?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649) for under US$8. The only downside was it was bigger than my print bed.
So I needed a holder and something to mount a fan on, and I needed to chop it up to fit on my 155x155 (6") printbed.
So here is the full