Hepa Filter Companion Cube Box Fan : r/bayarea
The filter to my Air Purifier after >2 months of use. One of my favorite purchases : r/CleaningTips
Homemade air purifier. 2 filters and a box fan : r/mildlyinteresting
better and cheaper than any air purifier on the market : r/pics
Changed the filter on my home-made box fan filter yesterday; yikes! Instructions inside on how to make your own for about $30 to improve your indoor air quality. : r/SeattleWA
$20 air purifier : r/lifehacks
DIY Air Purifier w/ 2x120mm Case Fans : r/DIY_tech
3D Printed HEPA+Charcoal Air Filter (Work in Progress) : r/3Dprinting
I wanted an air purifier for my allergies, but someone suggested spending $25 on a box fan and filter instead. Fingers crossed that it works! (Feat. concerned kitty) : r/Frugal
My surprisingly effective shop air cleaner. Box fan, bungee cords, and a furnace filter. Works pretty well. : r/BeginnerWoodWorking
Air purifiers are expensive, and we had an extra vent filter. : r/redneckengineering
DIY air purifier on a budget for people who got smoke inside their rooms/homes. : r/Calgary
How Important is Filter Direction : r/AirPurifiers
My home made air filter fan. Looks like it's working... : r/Calgary
Social media and duct tape are helping people make DIY air purifiers that filter out wildfire smoke | AP News
Do the DIY box fan filters work? Well, here's mine after just 1.5 days running in a closed bedroom (Greenwood area) : r/SeattleWA
Made an air purifier from a box fan, an air filter, and some duct tape. : r/redneckengineering
Spare fan and good filters : r/madisonwi
Reddit - Dive into anything
YSK: Air purifiers for smoke : r/Portland
Homemade HEPA filter for tiny, dusty apartment. This is the result of 18” furnace HEPA filter + Box fan on about 10 hours per day for 1 month. Total price <$40; 6
Has anyone used a filter on a box fan before? How did it go? I figured it would be a good idea since AQ isn't the best in my basement. : r/gpumining
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
