Homemade air purifier. 2 filters and a box fan : r/mildlyinteresting
LPT: Tape a 20x20" filter mesh to a window fan for a cheap DIY air filter that costs ~$20 : r/LifeProTips
I finally got my hands on the Lasko FF305. I'm kind of baffled why this seems to be the only company that ships a box fan with an air filter built in.
YSK: Air purifiers for smoke : r/Portland
DIY air purifiers a hot trend against wildfire smoke
DIY air purifier on a budget for people who got smoke inside their rooms/homes. : r/Calgary
Social media and duct tape are helping people make DIY air purifiers that filter out wildfire smoke | AP News
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
Air filter hack: Sackville groups put together DIY solution | CBC News
Is an $800 purifier best to clean your home's air? Marketplace tested 5 top brands and their claims | CBC News
Spare fan and good filters : r/madisonwi
Hepa Filter Companion Cube Box Fan : r/bayarea
3D Printed HEPA+Charcoal Air Filter (Work in Progress) : r/3Dprinting
Reddit - Dive into anything
Air filter on box fan day 2. Wild fire smoke : r/interestingasfuck
Cheap air purifier : r/Frugal
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 home made air filter fan. Looks like it's working... : r/Calgary
How Important is Filter Direction : r/AirPurifiers
20x20x1 + Box Fan : r/Portland
DIY Air Purifier w/ 2x120mm Case Fans : r/DIY_tech
LPT: Box fan + 20 inch filter = cheap and effective indoor pollen filter. : r/Austin
My surprisingly effective shop air cleaner. Box fan, bungee cords, and a furnace filter. Works pretty well. : r/BeginnerWoodWorking
If you want an air purifier but only have $39, slap a 20x20x1 filter on the back of a box fan : r/lifehacks
How to Make a Box Fan Air Purifier: 3 Different Methods | Digital Trends
