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Filtrete Healthy Living Ultimate Allergen Reduction 1900 MPR air filter

This whole-house air purifier from 3M can be installed by a do-it-yourselfer as a replacement for a forced-air heating/cooling system’s filter.

About

Overall score for the 3M Filtrete 1900 MPR is mainly how well the model removed dust and smoke from a test chamber, plus quietness for room purifiers and airflow resistance for whole-house units.
Dust/pollen/smoke removal: How well models cleared air of fine clay dust and cigarette smoke. Ones that scored well for dust removal should perform comparably for pollen. Airflow resistance: How freely air passes through a whole-house unit.

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