black & highly favored

And therein lies the rub ...

Yall better be glad that I’m not ruler of the earth because I would’ve brought back the guillotine 🙃

Holy fuck

If you live on the west coast of the United States, fire season is coming and this is vital.

We’ve been using one, and they’re great. Might try to make the double filter version this year.

I’ve personally used both the flat single-filter version AND the triangular two-filter version, and based on subjective personal experience I would argue that the benefits from the second filter, both in terms of airflow and filtration, are absolutely worth it. If you need a makeshift air filter and you have two filters to work with, build the triangle (if not the box, i have no idea how good that one works but based on the info here i presume it’s a fair bit better.)

This trick works. We use it in my house.

If anyone wants aesthetic inspo or design ideas check R/CrBoxes