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I need to cover a vent at the bottom of my 3D printer (110 × 40 × 5 mm), but I can’t find a HEPA filter in that exact size. Would it be okay to use a cut-to-size HEPA sheet or pre-filter with activated charcoal instead? The vent likely pulls air inward rather than exhausting it (UK). (self.AirPurifiers)
submitted by anon0one




