The DUO PAK 40 is a 1-ply filter measuring 16x20x11 inches, designed for efficient air filtration in HVAC systems. Manufactured by Koch Filter Corp, this product is ideal for capturing dust and allergens, ensuring cleaner air quality. The compact design allows for easy installation and replacement, making it suitable for both residential and commercial applications. Its durable construction ensures longevity, while the specific dimensions fit a variety of standard filter slots.
