Rather than spending hundreds on a high quality, high-output air purification system, consider this DIY option. Known as the Corsi-Rosenthal box, this simple air filter is made with readily available and affordable materials. Tested and proven to greatly reduce or even eliminate particles in the air including wildfire smoke, viruses, allergens, and dust, anybody can build one for themselves in about 20 minutes.
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Materials I used to make this Corsi-Rosenthal Box:
MERV 13 Furnace Filters, 20x20x1, 4-pack
https://amzn.to/3X2JZvl
Mainstays 20" Box Fan
https://amzn.to/3NiGMoc
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Illustrated Instruction Sheet
https://en.wikipedia.org/wiki/Corsi%E2%80%93Rosenthal_Box#/media/File:How_to_make_a_Corsi-Rosenthal_Box.jpg
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00:00 - Intro
01:31 - Materials Needed
02:53 - How it Works
03:16 - Attaching Walls
03:45 - Making Floor
04:32 - Fan Shroud
05:09 - Attaching Fan
05:32 - Attach Shroud
05:46 - Final Product
06:06 - Testing
06:49 - Conclusion
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