A couple years ago I built a DIY air filtration system known as a "Corsi Rosenthal Box". After a lot of use in the time between then and now, the time has come to replace the actual filter elements. Since these filters make up the structure of the whole box, it's a little bit of an operation to replace them. So in this video I will show how I go about swapping out the old filters for new ones. *Support us on Patreon!* https://www.patreon.com/greatlakescountry ------------------------------ Stuff used in this video: 20-inch Box Fan https://amzn.to/4fKERDM Merv-13 Filters 20-inch, Pack of 4 https://amzn.to/3DNkbh6 ------------------------------ Great Lakes Country (formerly known as Great Lakes Prepping) is a Michigan-based YouTube channel that focuses on all things DIY, such as cooking, hunting, gardening, outdoor projects, prepping, and lots of other stuff. Be sure to check out our original weekly videos and other online content, including greatlakescountry.com. Please note that we sometimes share links to products or services for which we may earn a small commission, though this does not affect any prices on your end. Check out our website and social media: Website: https://www.greatlakescountry.com Facebook: https://www.facebook.com/greatlakesprepping Instagram: https://www.instagram.com/greatlakesprepping/