20x20x1 + Box Fan : r/Portland
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.
The filter to my Air Purifier after >2 months of use. One of my favorite purchases : r/CleaningTips
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 purifiers are expensive, and we had an extra vent filter. : r/redneckengineering
Box fan air filter after 3 months and one particularly smoky day in Hollywood : r/LosAngeles
Box fan air purifier filter after 1 week of use during Campfire : r/sanfrancisco
DIY air purifier on a budget for people who got smoke inside their rooms/homes. : r/Calgary
DIY Air Purifier w/ 2x120mm Case Fans : r/DIY_tech
YSK: Air purifiers for smoke : r/Portland
Made an air purifier from a box fan, an air filter, and some duct tape. : r/redneckengineering
Is an $800 purifier best to clean your home's air? Marketplace tested 5 top brands and their claims | CBC News
3D Printed HEPA+Charcoal Air Filter (Work in Progress) : r/3Dprinting
Spare fan and good filters : r/madisonwi
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
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
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 home made air filter fan. Looks like it's working... : r/Calgary
STARKVIND Air purifier/additional gas filter, white - IKEA
Air filter hack: Sackville groups put together DIY solution | CBC News
If you want an air purifier but only have $39, slap a 20x20x1 filter on the back of a box fan : r/lifehacks
Homemade air purifier. 2 filters and a box fan : r/mildlyinteresting
