Filtrete 18x20x1 AC Furnace Air Filter MPR 1000 Micro Allergen Defense 4-Pack....

• OUTPERFORMS FIBERGLASS, WASHABLE AND NON-ELECTROSTATIC 3-month pleated 1 in. home air filters for your furnace, air conditioner or HVAC system

• DESIGNED WITH EXCLUSIVE Filtrete Brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through

• ATTRACTS AND CAPTURES particles such as lint, pollen, dust, pet dander, smoke and smog

• The higher the MPR, the more microparticles--such as pollen, pet dander, smoke, bacteria and viruses--your filter will capture from the air passing through it