3M 9805DC-6 Filtrate Micro Allergen Reduction Filters, 14" x 20" - New Description: 14" x 20" x 1", red, micro FILTRETE filter, 3 month filter is 90percent effective at capturing large allergens like mold spores & pet dander, electrostatically charged, captures microscopic allergens like dust, smoke & Smog, captures bacteria & particles that can carry viruses, meets the guidelines of the American Lung Association health house program, MPR rating 1000, lasts up to 3 months. Key Features: - 14x 20x 1, red, micro Filtrate filter, 3 month filter is 90Percent effective at capturing large allergens like mold spores & pet dander - Adds Extra shine to your product - Manufactured in China