So, every minute, the first guy delivers 1000 cubic feet air, 70% likely to be clean. So that is about 700 cubic feet clean air every minute. The second guy delivers 199.8 cubic feet clean air every minute. 18/

The big difference is the bigger flow allowed by the first guy more than makes up for its lower effective filtration. That is why we want to check CADRs and not just effective filtration. 19/