General description The filter is designed to capture pollen and 99.95% of dust and pollutant particles as small as 0.3 microns, making it an excellent choice for allergy sufferers, rhinitis patients, and pet owners. It effectively improves the air quality in your home. Technical specifications Material: Plastic + Felt + Sponge Package Contents: 2 x HEPA filters, 4 x felt filters, 4 x sponge filters Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with Navigator Swivel Pro Complete Upright Vacuum NV150, NV150C, NV251, NV255 Compatible with Navigator Zero-M Self-Cleaning Brushroll Upright Vacuum ZU60, ZU62, ZU62C Installation Easy to install Can be reused after washing Usage Wash with warm water and let air dry Neutral detergent can be used if necessary Replace foam/felt filter every 3 months and HEPA filter every 6 months to maximize performance Regular cleaning of the filter can improve suction power and vacuum cleaner performance Other information Note: