No, I don't mean a box fan with a crap filter in front of it. I'm thinking about something more substantial with a MERV16 filter. I've got two applications in mind, household dust in my master bedroom ...
With the reddish-orange skies and smoke-filled air, Californians who had previously never heard of PM2.5 pollution are quickly learning about the Air Quality Index and what they need to do to protect ...
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