part of the Silverstone Fortress FT 05 includes two 180mm fans at the bottom of the case.
These are both AP-181 fans, which can be controlled by two three-way mini-switches, that can drive them
between 600, 900 and 1200rpm. Since the intake is from the lower part of the case, Silverstone has equipped
the bottom part of the case with a huge washable dust filter. In the upper part
of the case you will be able to find a slot for the installation of a 120 millimeter
fan. If you love liquid cooling systems, the bottom part can house a 360 millimeter radiator and
you can also place a 120mm unit in the upper part of the case. We like
the overall flexibility you get with this case in terms of cooling,
although SilverStone is making use of a rather unusual layout.