when california was on fire, rich people bought $800 air purifiers. medium people taped filters to box fans. my roommate from last year said the entire bottom floor of lowe’s was repurposed just for selling box fans and filters. the unit she assembled went with her when she moved, so now i want to …

[image] judytuna: filter: for wildfires, it needs a rating of at least MERV 13. my filter is the Honeywell FPR 10 Air Filter. they hide the MERV rating, annoyingly. i chose the highest one in the table displayed at home depot. =P because allergies. but my home is hella leaky so a filter won’t…

what air filter should i attach to a box fan?

Slow Tech Support

judytuna August 22, 2020, 3:08pm 6

from the other thread:

my honeywell was FPR 10, which converts to the needed MERV 13.

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what air filter should i attach to a box fan?

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