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PF65000 11665103055 | Pfannenberg PF 65.000 Series Filter Fan, 230 V ac, AC Operation, 505m³/h Filtered, 831m³/h Unimpeded, IP55, 320 x 320mm | RS
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LPT: Tape a 20x20" filter mesh to a window fan for a cheap DIY air filter that costs ~$20 : r/LifeProTips
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