Brighton Professional™ MERV 11 20" x 30" x 1"/19.5" x 29.5" Pleated Air Filter; 4/Pack (FA20X30_4)
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These MERV 11, pleated 1-inch air filters are ideally suited for capturing fine airborne allergens such as dust, smoke, pet dander, mold, and dust mites. They are up to 30-times more efficient at capturing allergens than ordinary fiberglass filters. Each filter lasts up to 3 months.