BLUEAIRClassic 400 Series Genuine DualProtection Filter; fits Classic 480i, 402, 403, 405, 410, 450E, 455EB

I recently switched to a whole home purifier to reduce the consumables of the Blueair filters. While third party filters exist, the Blueair ones do seem to be better built and filter better. Many of the Blueair filters are designed with brushes to charge the air passing by so that they are trapped in the filter. I think there is some sort of optimization that exists.

Made and recommended by the purifier's manufacturer, these are high quality replacements. Yes, they are expensive, but going "cheap" resulted in clogged filters and an indication within 1 month that they were not functioning. I decided that if I spent what I did for the purifier to protect me and my family, spending a little more for best filters was worth it.

Fits the classic 480i perfectly. I generally try to buy OEM filters given that I want to ensure a good fit and the whole purpose of buying a high quality purifier in the first place is to be effective.Only downside is that they are very expensive and feels like they are taking advantage of locked in users.

Been using my Blue Air filter since 2001. I used the basic filter and then switched to the Dual Protection Filter last year and won't be going back. I love it. Worth the money, yet a bit pricey for a once every 6 month replacement.

Blue air service is awful. The filters are exactly the same from Amazon but Amazon is better to deal with.

For many years I've hated paying for Blue Air's replacement filters, and I have tried alternatives.But I need to pull cigarette smoke, odor, and (wishfully) combustion gasses out of my air. These do all that better than anything I know except hospital grade purifiers at many multiples of the price.

I’ve been consistently happy with my blue air machines and filters for five years.I own three

The filters are working, but they leave the "clean" air smelling like denatured alcohol, which isn't too pleasant and makes me wonder "why?" and "is this toxic?" I got the charcoal filters hoping for NO smell in the house, rather than exchanging one smell (pets/litter) for another.They are OEM and fit perfectly. Expensive filters, but I have had 2 of these for many years, and it is hard to justify tossing these big machines into a landfill. I probably will go back to the regular non charcoal filters next time, because these smell so terrible. I thought the smell would decrease, but it has been at least 3 days on medium high, and they are still smelling the same (if you don't know what denatured alcohol smells like, it is sweeter than rubbing alcohol, but a noxious chemical smell.)