Blue Signature™ Medium Nordic Fog blue-pure-max-filters 5 minutes or up to

5 minutes or up to 38 m² in 30 minutes

Blueair 400 Series DualProtection Filter

Replacement Particle+Carbon mesh filter (foldable) for Blue Pure 221

97%² of airborne particles

Powerful filtration

Blue Signature™ Medium Nordic Fog blue-pure-max-filters 5 minutes or up toPowerful filtration. Advanced odour removal. Rapidly cleans 46 m in 12. 5 minutes & up to 209 m in 1 hour 7 stages of filtration removes 99. 97% of airborne particles Advanced odour removal with OdourFence Technology Dynamic display that auto adapts to enhance your air Double the filter lifetime thanks to our patent pending filter design Smart features in the highly rated, newly improved Blueair app Device comes with 1 pre filter in Fog and 1 Particle