The Hengst Bio-Functional Cabin Air Filter - E977LB is a high-quality air filter designed for use in automotive cabin air systems. This filter is made with advanced bio-functional materials that can effectively remove harmful pollutants, allergens, and odors from the air. It is designed to provide clean and healthy air for passengers, protecting them from harmful particles and improving the overall air quality inside the vehicle. This filter is easy to install and is compatible with a wide range of vehicle models. It is a reliable and efficient solution for maintaining a clean and comfortable cabin environment.