Filtrete 12x20x1, AC Furnace Air Filter, MPR 1000, Micro Allergen Defense, 6-Pack

Filtrete Allergen Defense air filters turn your central heating and cooling system into a whole house air cleaner. Developed to pull in and trap unwanted particles, including: lint, dust and dust mite debris, mold spores and pollen, pet dander, and smoke and smog. Designed with Filtrete Brand 3-in-1 technology from 3M to pull in and trap unwanted air particles while letting clean air flow through Outperforms fiberglass, washable and non-electrostatic pleated 1" filters and lasts up to 3 months For residential use only Microparticle Performance Rating MPR 1000 equates to Minimum Efficiency Reporting Value MERV 11