Classic 400 Series DualProtection Filter

Choose the protection your air needs

Select the filter that fits your space, from everyday particle filtration to added protection against smoke, gases & odors.

Fresh filter, simple upkeep

Easy replacement and a built-in filter change reminder make it simple to keep your purifier ready to perform

4.1

Rated 4.1 out of 5 stars

4.1 Stars (51 Reviews)

Classic 400 Series DualProtection Filter

DualProtection

Keep your Classic air purifier performing at its best with reliable filtration designed for cleaner air and easy everyday upkeep.

Designed for

Classic 403 • 405 • 450E • 402 • 410 • 455EB

Great for

Dust, pollen, pet dander & everyday household odors

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1 Replacement Filter
Delivered Every 6 Months
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Free extended warranty

Why you’ll love it

Reliable filtration and simple maintenance make it easy to keep your Classic performing its best.

Captures dust, pollen & pet dander
Choose the filtration that fits your needs
Replace about every 6 months
Easy to remove and replace Filter indicator lets you know when it’s time for a fresh filter

6 month filter lifetime
Accurate filter lifetime tracking
App replacement alerts
Quick & easy filter changes

Features & Technologies

Particle Filter captures dust, pollen, pet dander and fine airborne particles.
DualProtection Filter adds enhanced carbon filtration to help reduce odors, gases, smoke and VOCs.
6-month replacement cycle keeps maintenance straightforward.
Filter change indicator reminds you when it’s time to replace.
Easy replacement design makes filter changes quick and simple.

Choose the protection your air needs

Select the filter that fits your space, from everyday particle filtration to added protection against smoke, gases & odors.

Fresh filter, simple upkeep

Easy replacement and a built-in filter change reminder make it simple to keep your purifier ready to perform

Smart Filtration, you can trust

Is this the right filter for you?

Find the Blueair model name on the label inside your air purifier.
Accurate filter lifetime tracking

Blueair’s proprietary RealTrack algorithm accurately calculates the remaining filter lifetime based on fan speed, usage time and pollution levels.
Subscribe & Save 15%

Dirty filters clean the air less efficiently. Sign up for a filter subscription and get fresh filters delivered right when you need them.

Main Filter

Captures airborne particles including, PM 2.5, pollen, dust mite matter allergen & pet dander allergen

Activated Carbon

Traps light household odors from smoke, cooking odors and more

FAQ

What air purifier is this filter compatible with?

This filter is compatible with the following Classic family models: 402, 403, 405, 410, 450E, 455EB, 480i.

How does this filter differ from the Classic Series Particle filter?

Classic DualProtection filters feature a highly-porous, lightweight carbon mesh that is extremely efficient at removing both particle and gaseous (odors, exhaust, smoke odors, and chemicals) pollutants from the air. Whereas Classic Particle filters are highly efficient in the removal of particle pollutants like pollen, dust, mold, viruses, and fine smoke particles.

How do I know when it’s time to change my filter?

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