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Refrigerator Filters
Whole House Filtration
Water Filters
20 x 24 x 1 Air Filters
20 x 24 x 1 Air Filters
One filter is available in this size: the 3M Filtrete 1000 Micro Allergen & Dust Defense, 20x24x1, sold in a 4-pack at $71.44.
This is a MERV 11 filter built around 3M's electrostatically charged pleated fiber technology, which captures dust, pollen, pet dander, dust mite debris, smoke, and smog particles — the everyday airborne contaminants that reduce indoor air quality and aggravate allergy symptoms. It outperforms standard 1-inch fiberglass and flat-panel filters in particle capture without restricting airflow in systems designed for 1-inch filters.
The 4-pack covers a full year at the recommended 3-month replacement interval. Actual dimensions: 19.7" × 23.7" × 0.8". Replace more frequently in homes with pets or high HVAC runtime. Questions? Call 1-800-277-3458.
