The 25X20 3'' Filter Base Fan/Coil from Southwark Metal Mfg Co is designed for efficient air filtration and circulation in HVAC systems. This robust filter base is constructed from high-quality materials, ensuring durability and long-lasting performance. With dimensions of 25 inches by 20 inches and a 3-inch depth, it fits seamlessly into standard ductwork. The design complies with industry standards, making it suitable for various applications in residential and commercial settings. This filter base is essential for maintaining optimal air quality and system efficiency.