F400Pa - Hepasilent Particle Filter For Classic 400Series Compatible With Classic 402, 403, 405, 410, 450E, 455Eb, 480I - White."Min 1 year manufacturer warranty"

Sold me a filter that was already written down as defective, and returned by a previous buyer. They even wrote the dates when it was bought and returned. I tried it and the smell was horrible, like a car that was leaking gasoline and oil Who sells someone something that’s already defective.

Quality, authentic

Great filter, works perfect with my Blueair device.

Good quality

純正品なので間違えなくスムーズに交換できました。

great item. Have four in my house, nobody is stuffed up. works sooo well

The Blueair filters are hospital grade filters that remove particulate down to about 1 micron. The filter with charcoal filters out unhealthy gasses. The Swedish designed Blueair Filter Units are excellent quality with noise levels below ambient bedtime levels (about 30 dbA)

The best air purifier brand in the market. I have been using Blue Air Air cleaners for over 8 years. Eliminates dust, pollen or even food smell. Sneezing, hay fever and itchiness are gone as well, and my eyelid doesn't feel heavy. I am extremely tidy, but London's air quality is terrible. I would not recommend any other brand than Blue AIr. The filter is heavy on price but your lungs are worth more than that.