Amazon.com: Blueair Blue Pure Fan Genuine Replacement Filter, Particle Filter for Large Pollutants Like Pollen & Dust : Home & Kitchen

Blueair Particle Replacement filter for the Blue Pure Fan. Unlike standard fans, the filter + fan combination removes over 99% of large airborne particles, like pollen and dust in just 20 minutes⁰ to deliver air that's both cooling and clean. For optimal performance, use genuine Blueair filters and replace the filter about once every six months when used 24 hours a day. The use of non-genuine filters will void the warranty. ​⁰Based on third-party testing of removal rate of dust particles (2.839μm) and pollen particles (7.234µm) in 20 minutes at a room volume of 1,008 ft according to AHAM AC-1-2019 standard.

Genuine Blueair particle replacement filter for the Blue Pure Fan
Cleans as it cools, the Blue Pure Fan filters out over 99% of airborne dust and pollen particles in just 20 minutes⁰
Genuine Blueair replacement filters for optimal performance.
We recommend replacing your filter about every 6 months when used 24 hours a day