The best 120*120*15mm case fan to replace the one in the radiator of my LEPA Cooling loop kit?

[sujeto1]

Im looking for the best fan cooler, in terms of performance to replace the one in my Cooling Kit LEPA, but it has to be slim, under 15mm of high.

 

[doubletake]

Why do you need a slim fan if the stock fan is a standard 25mm thickness?

 

[sujeto1]

Why do you need a slim fan if the stock fan is a standard 25mm thickness?

Cause the case is too small and I have clearance issues, this is the why I have to replace it.