A simple, no-nonsense guide for Spokane. Links with ↑ symbol are external.

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Build a DIY air filter

1. Get a 20” x 20” MERV 13 filter and a box fan.

2. Attach the filter to the back of the fan.

3. Seal edges with tape to reduce air leaks.

4. Run the fan during smoke events; do not leave on unattended.