The air filter kits are finally here! This video covers Model-B and Model-C design and construction. It's taken months of work and countless prototypes to finalize these designs. I hope you like them! If you do or don't let me know why in the comments.

Both kits work with most Box fans and 1" or 2" thick filters. Any brand filter should work (7 have been tested). The Model-B uses 20x30in filters and the Model-C uses 20x20in filters.

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Buy Kits here:
https://www.etsy.com/listing/1373712349

Keep in mind this is a do-it-yourself style air filter kit. Correct assembly is required to filter the air passing through the device. Results with this device are dependent on the fan and filter of your choosing. The fundamentals of this design are based on a Corsi-Rosenthal air filter (sometimes called a “comparetto cube”). The quality of filtration achieved by these designs have not been independently tested or verified. Viruses and other extremely small particles may not be filtered out by the device. Use at your own risk.

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You can build a filter of this type with Tape, A Box Fan, and 4 or 5 20x20x1 Air Filters. I show how to build one here...
   • Build & TEST 3 DIY Corsi-Rosenthal Bo...  

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SHOPPING LIST

FANS
Air King 20in Box Fan (best performance):
https://amzn.to/3Tbzl1O
Lasko 20in Box Fan (best price):
https://amzn.to/3c3nVNF

MERV 14 FILTERs
3M Filtrete 20x20x1(2 pack)
https://amzn.to/3duBAxY

Nordic Pure 20x20x2 (3 PACK):
https://amzn.to/3Ovz8WJ

MERV 13 FILTERS
3M MERV 20x20x1 (4 pack)
https://amzn.to/3DCrHIy

Filter Buy 20x20x2 (4 pack)
https://amzn.to/3hUCPbV

MERV 11 FILTERS
K&N 20x20x1 (1 pack)
https://amzn.to/3UN3mXo

3M 20x20x1 (4 Pack)
https://amzn.to/3V4dUkD

Nordic Pure 20x20x4 (1 PACK)
https://amzn.to/3IPFSM1

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Rodney at Soulcraft of Ferguson, MO helped me create the prototypes for these. If you are in the St. Louis area and are interested in learning woodworking, check out his shop!
https://www.soulcraftmakers.com/makers

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