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Positive Pressure Box Air Filter — image 1
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Positive Pressure Box Air Filter

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Fan/airfilter unit for DIY positive pressure box

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GNU General Public License v3.0

A case for a AER1 HAPF300 (https://filter-monster.com/products/h-hapf300-fm ) filter, with spots to press fit two 80mm computer fans. Unit was JBWelded into a box, and powered with a 12V wall wart. I also place a carbon prefilter sheet over top of the fans, just to try and keep it a little cleaner.

I did have to cut it into two parts using my slicer and glue them together, then to seal up everything I used electrical tape to try and make sure all the air only was pulled in through the fans, and reduce how much air was going out around the case

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