The OMRON ZN9-APF25 is a high-quality pre-filter designed specifically for the ZN-A air clean units, measuring 250x250 mm. This essential accessory enhances the performance of your air cleaning system by effectively capturing larger particles before they reach the main filter, thereby extending the life of the HEPA filter. Ideal for clean room environments, this pre-filter ensures optimal air quality and system efficiency. Manufactured by Omron Automation and Safety, it is a reliable choice for maintaining superior air purification standards.