The filter can capture pollen and 99.95% of dust and pollutant particles as small as 0.3 microns, such as pet dander etc. It is an perfect choice for allergic people, rhinitis patients and pet owners.Effectively improve the air quality of your house. Vacuum Rotator Filter Replacement Set Compatible with for Navigator Swivel Pro Complete Upright Vacuum NV150, NV150C,Compatible, NV251, NV255,Compatible with for Navigator Zero-M Self-Cleaning Brushroll Upright Vacuum ZU60, ZU62, ZU62C Replacement cycle: In order to maximize the performance of your for vacuum cleaner and extend its service life, you must remember to replace the foam/felt filter every 3 months and the HEPA filter every 6 months. Washable and Reusable: Easy to install and can be reused after washing. Clean with warm water and let it air dry. Neutral detergent can be used if necessary. Regular cleaning of the filter can improve the suction power and performance of the vacuum cleaner so that it can you better. Material:Plastic + Felt + Sponge colour:As Shown Package Contents: 2 x HEPA filters 4 x felt filters 4 x sponge filters Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.