Noctua NF-A4x10 24V PWM, 40mm Quiet Fan for 3D Printers and Other Applications, 4-Pin, 24V Version (40x10mm, Brown). Includes anti-vibration mounts, fan screws, extension cable, Low-Noise Adaptor (LNA), NA-AC9 adaptor and OmniJoin adaptor set for connecting the fan to proprietary fan headers.
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