The Southwark Metal Mfg Co 14X20 6'' Filter Base is designed for use with fan and coil units in HVAC systems. This filter base measures 14" x 20" and accommodates a 6-inch duct connection, ensuring efficient airflow and filtration. Constructed from high-quality materials, it meets industry standards for safety and reliability. The design allows for easy installation and maintenance, making it suitable for both residential and commercial applications. This product is engineered to enhance the performance of your HVAC system, providing optimal air quality and comfort.