Same on the backside, 120mm where air is pushed outwards. When enabled, it looks striking.
At the top, or under the hood we see an additional air exhaust. There is still one more fan though, a 120mm fan that's in front of the HDs.
Important, if you like to open up your case you'll need to remove two screws, awwwww there goes the 100% screwless design award!
Once you did that, just open the door with the help of this handle.