The MULTI-CELL HC FM 85 filter, measuring 24x20x12, is a high-efficiency air filtration product from Koch Filter Corp, available in a single unit per carton. This filter is designed to capture a wide range of airborne particles, ensuring improved indoor air quality. Its multi-cell design enhances surface area, allowing for better airflow and filtration performance. Suitable for various HVAC systems, it meets industry standards for efficiency and reliability. The durable construction ensures long-lasting performance, making it an excellent choice for both residential and commercial applications.