The Filterbuy replacement mini pleat air filter 16x20x4 with header (actual size: 13.38" x 17.38" x 3.38") ensures that your HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 13 synthetic media is recommended with its capability to trap 98% of dust particles while protecting your business from bacteria, smoke, smog, lint, pollen, mold, dander, and other forms of debris without impacting air flow. High quality construction features an electrostatically charged design with tighter pleats that can handle more air volume while maintaining a high level of particle removal. These deep pleats paired with easy installation frames create an extended surface area that collects more contaminants and lowers energy costs, making them perfect for commercial settings. Plus, our industrial grade components are 100% manufactured within the United States and designed with recyclable materials, providing an eco-friendly alternative to enhancing your air quality.