The DUO-CUBE 4 PLY filter, measuring 20x20x10 inches, is engineered for high-performance air filtration in various HVAC applications. This filter features a unique 4-ply design that enhances its ability to capture particulate matter, ensuring cleaner air in your environment. Each carton contains 10 filters, providing an economical solution for regular maintenance. The filter is constructed from high-quality materials that comply with industry standards, ensuring durability and efficiency. Its design allows for easy installation and replacement, making it a practical choice for both residential and commercial use.