Strangely I don't have a vacuum that uses these bags. I bought these with the intention of using them as a mask filter for COVID-19. However, I can speak about the quality of the filters/bags. They are very well built. They have 2 separate layers. Airflow is adequate but they seem to filter pretty well. They seem to be a good compromise between airflow and particle filtering. I plan to do more testing with them but they appear to be a good solid vacuum bag. I'm sure they can handle any job they are involved with (as long as it involves filtering).
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