The PerfectPleat HC M8 28-1/4+29-1/4+2 by AAF International is a high-efficiency air filter designed for optimal performance in HVAC systems. This filter features a pleated design that enhances airflow while capturing airborne particles effectively. Measuring 28-1/4 inches by 29-1/4 inches, it is constructed with durable materials that ensure longevity and reliability. The M8 rating indicates its ability to filter out a significant amount of dust and allergens, making it suitable for both residential and commercial applications. This filter is compliant with industry standards, ensuring it meets the necessary performance criteria for air quality. Ideal for use in various HVAC systems, the PerfectPleat HC M8 is a smart choice for maintaining clean air in your environment.