Superior Air Filtration: M11-rated filters capture fine particles including dust, pollen, and pet dander for cleaner indoor air. HVAC System Protection: Helps extend the life and efficiency of your heating and cooling system by reducing buildup on coils and fans. Durable Construction: Rigid frame design resists moisture and collapse, maintaining proper airflow throughout the filter’s lifespan. Standard 12x24x1 Size: Fits most residential HVAC systems—easy to install and replace for year-round comfort. 12-Pack Value: Stock up with a full year’s supply of high-efficiency filters for convenient, continuous protection. Keep your home’s air clean and your HVAC system running efficiently with DuPont ProClear Superior M11 Air Filters. Designed for high-performance filtration, these 12x24x1 filters capture airborne particles like dust, pollen, and pet dander to help improve indoor air quality. The M11 efficiency rating offers superior protection for households with pets or allergy concerns. Each filter is built with durable materials that resist moisture and sagging, ensuring consistent airflow and long-lasting performance. With this convenient 12-count value pack, you’ll have a year’s supply of dependable air filtration for your furnace or AC system.