Cat-lover Alan couldn't stand the stink of the litter box in the garage, so he built in a bathroom fan that vents out the side of the house. To smarten up the system, his Mac mini automates the ...

How to make a portable DIY air purifier. To construct your box, ... stand them up and connect the edges of the last two ... four MERV-13 air filters, a 20-inch box fan, the box the fan comes in, ...

Converting a box fan to a cheap, effective air purifier is easier than you might think. Here's what you will need, how to do it, and what mistakes to avoid.

Designed during the COVID-19 pandemic, a DIY air purifier known as a Corsi-Rosenthal box is becoming popular for its efficacy and inexpensive cost. Skip Navigation Share on Facebook ...