Prusa Box Enclosure  HEPA  Carbon filter cover for Noctua industrial fan
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Prusa Box Enclosure - HEPA & Carbon filter cover for Noctua industrial fan

The height of the cover and the spacing of the holes are modified to fit Noctua industrial PWM fan with the bumpers ...

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Prusa Box Enclosure - HEPA & Carbon filter cover for Noctua industrial fan alternatives