Build & TEST 3 DIY Corsi-Rosenthal Box Fan Air Filters

Sure it's easy to make a Corsi Rosenthal Box filter, but how well do they work? I test 3 different configs of this staple of DIY engineering. I also add some legs to the design so that I can max out the performance with a 5th air filter! You can buy this as a tape-free kit! https://www.etsy.com/listing/1373712349 __SHOPPING LIST - These link help support the channel! __ FANS Lasko 20in Box Fan (best price): https://amzn.to/3c3nVNF Air King 20in Box Fan (best performance): https://amzn.to/3Tbzl1O MERV 14 FILTERs Nordic Pure 20x20x1 (12 PACK): https://amzn.to/3O6GGgr (currently these are more expensive than when I filmed this a month ago) Nordic Pure 20x20x1 (6 PACK): https://amzn.to/3o5Ge7E MERV 13 FILTERS 3M Filtrete 20x20x1(4 pack) https://amzn.to/3hUCPbV MERV 12 FILTERS Nordic Pure 20x20x1 (6 Pack): https://amzn.to/3O6HaTN MERV 8 FILTERS Nordic Pure 20x20x1 (6 Pack): https://amzn.to/3Rz9T6G GAFFER TAPE Better than duct tape for this use https://amzn.to/3AR6E4Q Buy literally anything on amazon at this link to help support the channel! https://amzn.to/3vdlIqj --------------------------------------------------------------------------------------------------- I'm on Patreon!!! The reward levels are very basic for the time being but I promise to bring merch and other perks in the future.   / the3dhandyman   The 3D Handyman is a production of 2 Point Media. Stay classy, folks!