"There is a lots out space for exhaust fans at the back of the case. In the center you can see there is a 120mm exhaust fan that is included with the case. Below that there is spaces for three 40 mm fans which are not included. Above the power supply there is also room for two more 80mm fans. As you may notice from the shape of the cut out for the power supply that case mounts the power supply the opposite way of most cases. This means if you are using an Enermax power supply or a power supply that has a second fan in what is meant to be bottom it will be on the top instead pulling air downwards into the power supply instead of upwards from the bottom."
FULL STORY @ IAMNOTAGEEK (http://www.iamnotageek.com/cgi-bin/reviews.cgi?name=pc-78&p=1)