That study did not include the risk of reaersolization (blow back up in the air) of dried respiratory aerosols that will have settled on the ground. You will give a little in efficiency to gain safety. http://poppendieck.com/IAQ/COVID19%20FAQ.html
As discussed here, it decreases performance. The 1″ filters are fine – although you would get even better performance with 2″ filters. Just not 1″ filters doubled up.
This is with the Utilitech 20″ Box fan – 58 Watts when cranked to max, as measured by Jim Rosenthal. The measurements below are for: No filter attached. 1 filter attached – 1″, 2″, 4″ Box filter – the full… Read More »Electricity – how much does it use?
Put on your N100 elastomeric respirator (more comfortable than N95). Does not have to be N100 – just better masks work…better. Carefully, pick up the Corsi/Rosenthal box and gently take it outside. Carefully cut the filters apart, gently peel it… Read More »How do I dispose of the filters?
Always refer to the manufacturer’s specifications. But a general rule of thumb is: If used during smoke season, 3 months. If during regular usage, 6 month. Additional details on MERV 13-A filters which for sure will are the ones that… Read More »How long do the filters last?
You can build one of these for just under $100, and it will help significantly remove respiratory aerosols that contain SARS-COV-2 from the air. We recommend at least 2 of them in a normal sized classroom. $200. Keep in mind… Read More »How expensive is the Corsi/Rosenthal Box?
Roughly 51 DBA..This is more quiet than a refrigerator.
A simple question, but can be a complicated answer. Try not to place next to a wall if possible. You want air flow. If you know who’s infected, next to them (typically placement in a patient’s hospital room). If you… Read More »Where should it/they be placed in the room?
