Compatible with Blue Pure 411, 411+ and MINI purifiersContains 2 high-efficiency 2-in-1 filtration systems, including particulate filters and activated carbon filtersThe particle filter removes particles in a area and in the , including dust, pet dander, common pollutants and fabric fibers.Carbon filters can suppress household odors, smoke, chemicals and volatile organic compounds.Replace it every 6 months for best performance.colour: whiteMaterial: PP+activated carbon cottonPackage Contents:2 x Purifiers FiltersOnly 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.