The products are made of high-strength and environmentally friendly materials to optimal performance and a healthier . HEPA filter is made of high-strength environmental-friendly materials, which can block most of dust down to 0.3 micrometer. The filter can maintain the cleaning performance of the sweeper, while reducing the penetration of dust, pollen and other allergens into the air you Replacement Filter: A dirty filter will greatly reduce suction power. Depending on the vacuuming frequency and amount of dirt cleaned, for best performance, change the filter at least every 3 to 6 months. It can remove 99.9% fine dust particles, protect the air in your living environment and the service life of the vacuum cleaner Easy to install and remove, no need to spend extra energy and time. Compatible with model: For FC8198 FC8199 Color: White Yellow Material: plastic Package Contents: 10 x HEPA Filter 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.