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Creality Noctua NF-A4x10 PWM 40mm x 10mm Ultra Quiet Silent Fan 12V 3-Pin Premium Cooling Fan for CR-10 S4/CR-10 S/CR-10/CR-10 S5/CR-10 mini 3D Printer
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Noctua NF-A4x10 FLX ( 40x40x10mm ) | 40mm | Axial fans | Air cooling | Aquatuning USA
Creality Ender 3 Pro Hot End Noctua A4x20 Fan Upgrade 40mm x 20mm | FINALLY Some Silence! - YouTube