![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)
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
![Amazon.com: Noctua NF-B9 redux-1600 PWM, High Performance Cooling Fan, 4-Pin, 1600 RPM (92mm, Grey) : Electronics Amazon.com: Noctua NF-B9 redux-1600 PWM, High Performance Cooling Fan, 4-Pin, 1600 RPM (92mm, Grey) : Electronics](https://m.media-amazon.com/images/I/91mVDg6CdCL.jpg)
Amazon.com: Noctua NF-B9 redux-1600 PWM, High Performance Cooling Fan, 4-Pin, 1600 RPM (92mm, Grey) : Electronics
![Amazon.com: Noctua NF-P12 redux-1700 PWM, High Performance Cooling Fan, 4-Pin, 1700 RPM (120mm, Grey) : Electronics Amazon.com: Noctua NF-P12 redux-1700 PWM, High Performance Cooling Fan, 4-Pin, 1700 RPM (120mm, Grey) : Electronics](https://m.media-amazon.com/images/I/81ZUUX5VZsL.jpg)
Amazon.com: Noctua NF-P12 redux-1700 PWM, High Performance Cooling Fan, 4-Pin, 1700 RPM (120mm, Grey) : Electronics
![Anyone else using Noctua fans on the ender 3 that can chime in on sound? Mine doesnt seem to be any quieter than stock. : r/3Dprinting Anyone else using Noctua fans on the ender 3 that can chime in on sound? Mine doesnt seem to be any quieter than stock. : r/3Dprinting](https://preview.redd.it/pubdevat1je11.jpg?auto=webp&s=92f6bb717348d0dbabbdb241f95c0698a75ba443)
Anyone else using Noctua fans on the ender 3 that can chime in on sound? Mine doesnt seem to be any quieter than stock. : r/3Dprinting
![Free 3D file U1JO - Hemera 4010/5015 Noctua style (radial) Fan Duct・3D print object to download・Cults Free 3D file U1JO - Hemera 4010/5015 Noctua style (radial) Fan Duct・3D print object to download・Cults](https://files.cults3d.com/uploaders/14445835/illustration-file/989d985d-4d31-41c6-976d-11dc38c6b7b4/Xnip2020-03-03_18-04-28.png)