[PPRAANet] Crosi-Rosenthal Box (Wildfire Smoke Mitigation)

[Jason Taylor]

Corsi–Rosenthal Box - Wikipedia
<https://en.wikipedia.org/wiki/Corsi%E2%80%93Rosenthal_Box>

For those of us who are more sensitive to particulates in the air (read:
smoke) this is a great way to help mitigate wildfire smoke within your home.

I've been doing a similar setup for years with 2x 20" filters and two
triangles cut out of cardboard, but I imagine this design is a bit more
effective. Noticeable improvement in air quality in a few hours.

--Jason
de KØWTF