The MD-10 PAD 9"x57" filter by Koch Filter Corp is engineered for high-efficiency air filtration. This filter measures 9 inches by 57 inches and is sold in packs of 8. It is designed to capture dust, pollen, and other airborne particles, making it ideal for various applications, including HVAC systems. The filter's unique design ensures a high dust-holding capacity, which prolongs its lifespan and reduces the frequency of replacements. Constructed from quality materials, it meets industry standards for performance and reliability. This filter is perfect for maintaining clean air in both commercial and residential settings.