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Corsi–Rosenthal Box
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this post was submitted on 31 May 2025
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I just Bungie cord one filter to the back of a fan to filter the air in my parrot room. I change the filter every two months and it works well enough to keep the dander from building up.
Yup, and adding the cardboard shroud helps keep it from stucking unfiltered air into the flow.
I think the main reason for the 4 filters is to reduce load on the fan and increase filter life. But many forced air heating systems get by with one or two filters stacked on the inlet.