Filtrete - 20 in. W X 24 in. H X 1 in. D Polypropylene 1000 MPR Pleated Allergen Air Filter 1 pk - Case of 4

Designed to help protect your home’s air handling system, this pleated filter works inside your furnace or air conditioner to capture airborne particles as they move through the ducts. Its electrostatically charged polypropylene media, rated at 1000 MPR, targets smaller contaminants such as pet dander, smoke, and smog as well as common household particles including dust, lint, pollen, and mold spores.

Built for large residential returns, this 24 x 24 x 1-inch Filtrete Allergen Defense filter uses pleated electrostatic media with 3‑in‑1 technology to clean recirculated air in your furnace or central AC system. With a 1000 MPR (MERV 11) rating, it is engineered to attract and capture microscopic particles like pet dander, smoke, and smog, along with larger allergens such as lint, household dust, pollen, and mold spores.

Formulated for everyday residential HVAC use, this pleated allergen filter helps reduce airborne particles as air recirculates through your home, supporting a cleaner and more comfortable indoor environment when changed on a routine three‑month schedule. The electrostatically charged media with a 1000 MPR performance level is designed to capture a mix of fine and larger particles.