We wuz inventors n sheeeeit.
(media.scored.co)
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> Without the use of high-tech supplies, Shokunbi created the air filter using a box fan, four furnace filters, duct tape and cardboard. After sending the filter out for testing, the Environmental Protection Agency (EPA) gave the device a 99% efficiency rate.
Literally made a cube out of HEPA furnace filters (White invention) and stuck a box fan (White invention too) on top blowing out. Secured it using cardboard and duct tape. This receives national coverage, praise, and 11.5 million.
> “A lot of people, they don’t realize sometimes that the only thing standing between them and getting sick is science,” Shokunbi said.
Fucking hell I don’t even have words.
By the way, you can make a very cheap, effective air purifier for one room or small appartment with a single 20x20x4 MERV 13 furnace air filter and a box fan.
Just tape the two together ( respect the air flow arrows for the filter ). MERV 13 will remove dust, small particles, bacteria, molds, pollen and lower viral load of the room. Lower MERV ratings will filter less stuff.
Don't use 20x20x2 for a single-filter DIY model, as the air flow will be too little. It has to be X4.
You can reduce air leak by covering the ''empty'' areas in corners of the box fan .
https://en.wikipedia.org/wiki/Corsi%E2%80%93Rosenthal_Box
Still on insta https://www.instagram.com/p/DCpdBiGR-Mq/
Found it. Just not in their feed https://nitter.poast.org/mymixtapez/status/1859700265680879910
Its a great deisgn. Far better than the $500 hepa filter. Will last much longer and has a higher cvm rating. I paid $12 per filter and $25 for the fan.