Uploaded February 2024 | Updated September 2026, 4 hours ago

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I used a 3M Versaflo Respiratory Faceshield and Breathing Tube for this project, but it can be modified for other systems. I am also using a Ryobi ONE+ 18V battery, but adapters can be found for other batteries - anything larger than 12V will likely need a buck converter to drop the voltage to the rating of the fans. The filters used in this design are 3M N95 Respirator Filter, model 5N11.

This description space is limited so the cutsheets, directions, and materials are posted under the Instructables project I put together:

instructables.com/Diy-N95-Powered-Air-Purifying-Respirator-PAPR