Discount Water Filters and Air Filters at Discount Filter Store.com

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Microparticle Performance Rating (MPR)

Micro-Particle Performance Rating is a metric developed by 3M Filtrete indicating how effectively a filter can capture particles between 0.3 and 1 micron in size. MPR is a metric indicating good, better and best, with filters containing the highest MPR (1900 or greater) being the most effective at filtering airborne particles.

Basic: MPR 300

  • Traps lint, household dust, pollen

Good: MPR 600

  • Traps lint, household dust, pollen, dust mite debris

Better: MPR 1000

  • Traps lint, household dust, pollen, dust mite debris, mold spores, pet dander, smog, smoke

Best: MPR 1500

  • Traps lint, household dust, pollen, dust mite debris, mold spores, pet dander, smog, smoke, bacteria, viruses

Maximum: MPR 1900

  • Traps lint, household dust, pollen, dust mite debris, mold spores, pet dander, smog, smoke, bacteria, viruses, odors