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
How to Make a Box Fan Air Purifier: 3 Different Methods | Digital Trends
YSK: Air purifiers for smoke : r/Portland
Made an air purifier from a box fan, an air filter, and some duct tape. : r/redneckengineering
20x20x1 + Box Fan : r/Portland
Air purifiers are expensive, and we had an extra vent filter. : r/redneckengineering
My surprisingly effective shop air cleaner. Box fan, bungee cords, and a furnace filter. Works pretty well. : r/BeginnerWoodWorking
LPT: Tape a 20x20" filter mesh to a window fan for a cheap DIY air filter that costs ~$20 : r/LifeProTips
Air filter hack: Sackville groups put together DIY solution | CBC News
Spare fan and good filters : r/madisonwi
A follow up to the DIY air purifier thread- here's my toddler's room's box fan filter after 6 weeks of nighttime use. Glad to know it's reducing his environmental allergy symptoms this
Box fan air filter after 3 months and one particularly smoky day in Hollywood : r/LosAngeles
Hepa Filter Companion Cube Box Fan : r/bayarea
If you want an air purifier but only have $39, slap a 20x20x1 filter on the back of a box fan : r/lifehacks
LPT: Box fan + 20 inch filter = cheap and effective indoor pollen filter. : r/Austin
Corsi-Rosenthal Cube | Air filtration system, Air cleaner design, Cube
DIY air purifier : r/lifehacks
Box fan with 3M MERV 12 Filtrete filters on the front and back, duct taped. I have a small room, will this do the trick as a Corsi-Rosenthal box? Not sure why
DIY air purifiers a hot trend against wildfire smoke
The Cuboid: A DIY air purifier that's better than a box-fan
Reddit - Dive into anything
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.
Social media and duct tape are helping people make DIY air purifiers that filter out wildfire smoke
DIY Air Purifier w/ 2x120mm Case Fans : r/DIY_tech
