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Pleated Furnace Filter, Ultra Allergen Reduction, 3-Month, Purple, 20x20x4-In.

Filtrete

The Filtrete, 20 x 20" x 4", Allergen Reduction Filter, 3 Month Filter, For Housing Units Accommodating 4" Nominal Size Filters & Is For Residential Use, Electrostatically Charged, Attracts & Captures Particles Like Pollen, Mold Spores, & Dust Mite Debris, MPR Rating 1550, Last Up To 12 Months. Actual size: 19 3/4" x 19 3/4" x 4 3/16".