ThreePack PreFilters for Extended Maintenance and Reliable Performance Includes three durable prefilters to provide extended use and reduce the frequency of replacements Designed to capture larger particles before they reach the main filter, helping to protect and extend the life of your device's primary filtration system Washable and reusable design allows for easy maintenance; simply rinse with water, allow to dry thoroughly, and reinstall Regular cleaning helps maintain consistent airflow and filtration efficiency, ensuring your device continues to operate at performance levels Practical and versatile, these prefilters are ideal for a range of environments and applications: Home use in air purifiers to help reduce visible dust and particles, contributing to a cleaner living space Office or workspace use to preserve device performance and reduce downtime from frequent filter changes Seasonal use in areas with pollen or airborne debris, supporting more effective air filtration during challenging conditions Constructed from quality materials for reliability and longevity, each filter is designed for easy handling during installation, removal, and cleaning. Suitable for devices that require prefiltration to maintain peak performance, this threepack offers a costeffective solution for ongoing maintenance without compromising air quality or equipment care.