Best understandable plans I've seen so far to build a corsi-rosenthal box. Everything else I've seen was practically gibberish.
Best understandable plans I've seen so far to build a corsi-rosenthal box. Everything else I've seen was practically gibberish.
found this too from the EPA website, also very easy diy air cleaner. even easier.
Image and instructions to build an air purifier made of
a 20 x 20 box fan with a single 20 x 20 filter attached to the back taking care that the air flow direction on the filter is pointing towards the fan.
attach with tape, bungee cords, or c shaped clamps.
change filter as needed.