How to make a 4-filter DIY Air Purifier with a round fan

So you've seen the #corsirosenthalbox DIY Air Purifier, but can't find a box fan? The World Health Network DIY Filter Team is here to help with our UK CR box.

#CovidIsAirborne #FreshAirRAndD

Видео How to make a 4-filter DIY Air Purifier with a round fan канала Fresh Air Schools