Compatible with for Rotator Away NV500, NV501, NV502, NV503, NV505, NV510, NV520 and other models, replace part numbers XFH500 and XFF500 and install it well. Our filters replacement comtains true HEPA filters,which Work for filtering at least 99.97% of airborne particle 0.3 microns in size and 99.99% of particles 0.1 micrones size. We use exquisite craftsmanship and high-quality materials to that the filter is not easily damaged during repeated use after cleaning with water, while maintaining the suction power of the vacuum. This product includes four filter cartridges, eight sets of sponges and brushes, and to that the vacuum cleaner works well, you need to replace the filters every three months. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Photo Color Material:plastic Package Contents: 4 x filter cartridges 8 sets x sponges 1 x brushes Only the above package content, other products are not included. Note: Light reflection 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.