FIT MODEL: -HA 50, Compatible with for S4, S5, S6, S8, S8000, S8999, S6000, S6999, S5000, S5999, S4000, S4999, Complete C2, Complete C3, Compact C1, Compact C2. DO NOT WORK with Classic C1 modelPREMIUM QUALITY REPLACEMENT PARTS: filter even fine dust and allergens, retains 99.95% of all particles - Perfect for those with house dust allergies. Also with active charcoal, effectively remove unwanted odor, Perfect for households with pets or smokersIMPROVE YOUR MACHINE PERFORMANCE: The airclean hepa filter works greatly with the vacuum cleaner. Suggested to change the filter once a year depending on your usage frequency, keep your vacuum cleaner at its highest performancesize:20x10cmMaterial:plasticcolour:bluePackage Contents:1 * Filter elementsOnly 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.