Good item!100% Quality Guaranteed !! Vacuum cleaner filter for A4 A4s A6 Purify .Adsorption of bacteria, fungi, dust,Often replace the filter to help make indoor more Filter and true hepa filter captures 99.97% of allergens,Filter helps reduce household odors True HEPA Filter captures 99.97% of dust and allergens as small as 0.3 microns such as household dust, pet dander, mold spores and plant pollens. Fit modle: for A4 A4s A6 Color: black + white Material: plastic + sponge Size about: 135X50X8mm Package Contents: 10*HEPA filter+10*Sponge Filters for A4 A4s A6 T4 X620 X623 X430 X431 X432 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.