20x24x4 Four Seasons Annual Pleated AC / Furnace Filter

DESCRIPTION:
Simply remove your existing filter and slide in the Four Seasons™ Annual (Up to 12 Months) Expanded Metal Backing pleated air filter—no tools or modifications required. Crafted with 100% synthetic, electrostatically charged media, these pleated filters deliver premium particle capture with minimal impact on system airflow. They trap up to 98% of common allergens and microscopic particulates—pollen, dust, pet dander, mold spores, environmental smog, and more—helping to alleviate sinus irritation, coughing, sneezing, and other respiratory discomforts. Ideal for anyone seeking superior indoor air quality, these filters meet or exceed industry standards for Indoor Air Quality, including LEED and American Lung Association® Health House®. The media resists bacteria, mold, mildew, and fungi growth under normal operating conditions and requires no chemical treatments. Designed for simple annual replacement, each filter lasts up to 12 months, making it an ideal upgrade from standard disposable panel filters.

FEATURES:
• High-Efficiency Filtration: Captures a broad spectrum of airborne particles—pollen, dust mites, pet dander, mold spores, and bacteria—to improve comfort and respiratory health.
• System Protection & Efficiency: By preventing contaminant buildup, these filters help your HVAC system run more efficiently and economically, extending equipment life.
• Easy Retrofit Design: The tapered 4″ depth fits into standard return-air housings originally built for 1″ filters, converting your system without any modifications.
• Secure Seal: Integrated rim gasket holds the filter firmly in place and prevents air bypass, maximizing filtration performance.
• Long Service Life: Engineered for up to 12 months of continuous use, reducing replacement frequency and maintenance effort.

CONSTRUCTION:
• Premium Synthetic Media: A blend of high-strength fibers offers exceptional dust-holding capacity and filtration efficiency.
• Electrostatically Charged: Media fibers attract and retain even the smallest particles without raising static pressure significantly.
• Expanded Metal Backing: Prevents media sagging and maintains pleat integrity throughout the filter’s life.
• Radial Pleat Formation: Uniform pleat spacing maximizes surface area for optimal dust loading.
• Robust Frame: Heavy-duty, die-cut board frame resists moisture and maintains structural integrity in demanding environments.
• High Pleat Density: Typically nine pleats per linear foot, creating ample surface area to capture airborne contaminants.