cooling part of the Xigmatek Aquila Windowed is decent as there are a few different spots to install fans. The package includes two fans with 3-pin headers, where one measures 200mm in diameter and the other 120mm. Apart from that there is space for two 120 mm fans
at the top and one at the back. In addition to those mounting places,
the Aquila can also house a 200mm fan at the front. As you could have
guessed, this means there should be enough room for a 240mm liquid
cooling radiator at the top. For our test, we used a cooler from be quiet! without encountering any problem as you can see from the image below.