to each filter, which was developed by ASHRAE (formerly the American Society of Heating, Refrigerating and Air-Conditioning Engineers). But 3M and Home Depot have developed their own ...

A model that scores well for dust removal should perform comparably for pollen. Overall score for the 3M Filtrete 2500 Smart Premium Allergen Ultra Fine Particles S-EAX22DC-6 is mainly how well ...