I hate the forest fire smoke, so I made this Corsi-Rosenthal air filter. The hardest part was finding MSRV 13 air filters, but other than that, it was really easy and it really works!! 💚💚💚
I need something like that for the window in my studio down at waterfront - that faces the coal trains that pass through everyday! The coal dust is maddening!! Why don't they have to cover that stuff?