The Omron Air Filter C28 is a replacement filter designed for use with Omron nebulizer models such as the CompAIR C28. These filters help ensure clean and effective nebulization by preventing dust, dirt, and other particles from entering the airflow. Regular replacement of filters maintains the device’s performance, extends its lifespan, and ensures safe, hygienic inhalation therapy. This pack contains 5 individual air filters, providing a convenient supply for continuous use.