Compatible with Blue Pure 411, 411+ and MINI purifiers 411+ filterFilter fibers are naturally to all you're getting is .High-efficiency Filtration - 2-IN-1 powerful H13 grade HEPA filter captures airborne particles and allergens, great for households with pets, improve asthma and allergies.The particle filter removes particles in a area and in the , including dust, pet dander, common pollutants and fabric fibers.Activated carbon mesh; A layer of carbon mesh traps light household odors, smoke, chemicals, and volatile organic compounds (VOC).Replace it every 6 months for best performance to maintain maximum filtering performance.Material:Composite materialcolour:WhitePackage 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.