Compatible with Blueair Blue Pure 411, 411+ and MINI air purifiers 411+ blueair filter.Filter fibers are naturally antibacterial to ensure all youre getting is fresh air.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.Filter advantage: HEPA filters remove up to 99.97% of airborne particles as small as 0.1 Micrometre. A true HEPA filter captures small particles, dust, hair, powder and more. Protect the motor. Improve fresh air.Purging Air Efficiently: The particle filter can help remove the large particles airborne in room,like pet dander, and fabric fiber; the activated carbon filter can efficiently absorb odors and fume.Replace it every 6 months for best performance to maintain maximum filtering performance.Keep the air purifier functioning properly. Replace the filter elements in time, fresh air.color: WhiteMaterial: CompositePackage Contents:2 x Air Purifiers Filters1 x Cleaning brushOnly the above package content, other products are not included.Note: Light shooting 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.