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Noctua Cooling Fans | Noctua Fan 40x40x20 | Noctua 50x10mm Fan | Noctua Fan A4x10 - Case Fans - Aliexpress
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Noctua Nf-f12 Industrialppc Computer Case Fan Silent 120mm Pwm 12v/24v 2000/3000rpm 12cm Cpu Cooling Fan - Case Fans - AliExpress
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Noctua Cooling Fans | Noctua Fan A4x20 | Noctua Nf A4x10 | Noctua Fan 12v | Noctua Fan 4 - Case Fans - Aliexpress
![I wanted to upgrade my stock part cooling fan to a pair of noctua 40mm fans and when I did a test run they barely push any air through the ducts compared I wanted to upgrade my stock part cooling fan to a pair of noctua 40mm fans and when I did a test run they barely push any air through the ducts compared](https://preview.redd.it/iowcxp3hjsh51.jpg?auto=webp&s=3ada0ae8b6e0b5df99650b5a7fecdb2c8ed3e30e)