Oh ! Ok I see now you are building " The Muzzle Flash " gorgeous !! But I don't see the placement of your cougar 120 mm fans in your system yet how are you planing to place it . Your advice will help me in my build thanks . Generally speaking cougar fans are really good but One thing I am worried with fan is that some people who have placed then horizontally had some vibration with them. One question 47 knucklehead why did you get the 120 mm and not 140mm of these fan as the switch 810 can fit 140mm in them.