I built a #CorsiRosenthal box in NZ. 50cm box fan from Mitre 10, filters sadly from Amazon. I ordered 50x75 by accident - I meant to get 50x50 - so the unit is taller than I had intended.

Interestingly Amazon.com refused to ship to NZ but Amazon.com.au was happy to, even though the seller was in the US. Go figure.

Insect screen is a prefilter because we have cats. Nothing sticks well to that mesh, so maybe use some other kind of mesh fabric.

#CorsiRosenthalNZ #covid #airpurification

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