"Work out where you want to place your fan filter. Mine was needed for a 120mm card cooler so the placement had to be relative to that. You may ask why use an 80mm rather than a 120mm well to be honest I've already fitted many 120mm and always thought an 80mm would do the job. Apart from that I already had one of these left over from an other Mod I'd been working on"
FULL STORY @ GIBTEK (http://www.gibtek.co.uk/hardware/dragonblowhole.html)