The STRATA FILTER 16-1/2" x 18-1/2" x 1" from AAF International is an essential component for maintaining clean air in HVAC systems. This filter is specifically designed to fit standard dimensions, ensuring compatibility with a wide range of systems. Its 1" thickness provides a balance of airflow and filtration efficiency, capturing dust and allergens effectively. Constructed with high-quality materials, this filter meets industry standards for performance and reliability. Ideal for both commercial and residential applications, it offers easy installation and replacement, making it a practical choice for air quality management.