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Boxed In

What can you make with 4 MERV13 air filters, a box fan, and some duct tape?

Well, a Corsi-Rosenthal Box, of course!

And why would you want to make a Corsi-Rosenthal Box? Well, to reduce indoor exposure to airborne particles, including those containing the virus that causes COVID-19. The box fan pulls air through the filters on the sides and blows out clean air. It’s an affordable way to improve ventilation in older buildings like our beloved WPRC.

How do you use a Corsi-Rosenthal Box? Just turn it on and forget it (except to turn it off when you leave the room). It really is that easy. Turn the fan to high and let the box purify away while you are in a room with other people. The boxes do not produce a lot of sound (thanks to the “shroud” of cardboard on top) and really do work best at high speed.

There are several Corsi-Rosenthal Boxes in the Fellowship Hall that Eric Baucom made, and now, members of the Critical Care Team (with amazing guidance from Susan Baker who also procured all the supplies) have made three more, so you’ll find them scattered around our church building in the most often used rooms (Session Room, Pastor Katherine’s Office, and the Parlor). However, the boxes are very lightweight and can be moved from room to room as needed. Also, don’t forget to open windows (and close them) as much as possible.

Improving ventilation, staying up to date on all COVID-19 vaccines, getting tested if needed, and staying home when you are sick are the best ways to protect yourself and others from COVID-19. Members of the WRPC community have worked so hard throughout the COVID-19 pandemic to keep each other safe, so let’s continue to do these important prevention activities.


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