I built a HEPA filter out of a free table and scrap : r/DIY
Spare fan and good filters : r/madisonwi
The Cuboid: A DIY air purifier that's better than a box-fan
Social media and duct tape are helping people make DIY air purifiers that filter out wildfire smoke | AP News
Cheap air purifier : r/Frugal
Social media and duct tape are helping people make DIY air purifiers that filter out wildfire smoke : r/gadgets
3D Printed HEPA+Charcoal Air Filter (Work in Progress) : r/3Dprinting
DIY Air Filter Box Fan : r/woodworking
3 months of using my homemade air purifier. : r/pics
DIY Air Purifier w/ 2x120mm Case Fans : r/DIY_tech
DIY air purifier : r/lifehacks
Homemade air purifier. 2 filters and a box fan : r/mildlyinteresting
Made an air purifier from a box fan, an air filter, and some duct tape. : r/redneckengineering
DIY Air Purifier w/ 2x120mm Case Fans : r/DIY_tech
Fellow Allergy Sufferers! DIY Air Purifier on the cheap. : r/DIY
The filter to my Air Purifier after >2 months of use. One of my favorite purchases : r/CleaningTips
Made an air purifier. Kinda loud and ugly but it works. : r/redneckengineering
Box fan air purifier filter after 1 week of use during Campfire : r/sanfrancisco
How to Make a Box Fan Air Purifier: 3 Different Methods | Digital Trends
Corsi-Rosenthal Box DIY Purifier: Running Costs, Noise, Efficiency – Smart Air
DIY Air filter if you do not have a central air filter. See comment : r/statenisland
DIY Air Filter For Resin Room : r/resinprinting
Air filter on box fan day 2. Wild fire smoke : r/interestingasfuck
Very simple, low cost air filter. : r/BeginnerWoodWorking
