These filters seem like a good replacement. I've tried different ones, from cheap papers to very expensive ones, and they all have their pros and cons. Expensive - always blocks airflow. maybe they filter well, but then it takes longer to cool the house. Cheap - doesn't block airflow - but almost non-existent - meaning you can feel dust in the air even if they're brand new. With these - airflow is still good - and I don't feel any dust. The pollen season is over so I can't comment on that part.
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