Box fan / homemade HEPA filter

  • City: Los Angeles
  • State: California
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Description:

This is a 20x20 box fan that I converted into a HEPA filter. Its basically this: https://smartairfilters.com/en/blog/how-to-make-diy-air-purifier/ Except I used a $100 air filter. I'm doing some cleaning and getting rid of it.