Filtrete 16 In. x 25 In. x 4 In. Allergen Defense 1000 MPR Deep Pleat Furnace Filter Stihl rust resistant steel blades to

rust resistant steel blades to stay sharp longer

Won't harm pipes when used overnight

and are offered with both a Buna and EPDM gasket

Suction cups on the bottom keep this mat securely in place

of Swell to 16 oz

Filtrete 16 In. x 25 In. x 4 In. Allergen Defense 1000 MPR Deep Pleat Furnace Filter Stihl rust resistant steel blades toFiltrete Allergen Defense deep pleated filters attract and capture microscopic allergens like dust, smoke, and smog particles, and large allergens like mold spores and pollen. For residential use only. Outperforms fiberglass, washable and non electrostatic 3 month pleated 1 In. filters. Red label.