Filtrete - 20 in. W X 24 in. H X 1 in. D Polypropylene 1000 MPR Pleated Allergen Air Filter 1 pk

Air circulation in central systems constantly carries fine allergens back to the return, where this pleated panel is designed to intercept them. In the 1000 MPR (MERV 11) performance tier, the 20x24x1 Micro Allergen Defense filter uses electrostatically charged polypropylene media to capture a broader mix of particles than basic dust filters, including household dust.