Classic 400 Series DualProtection Filter

Compatible with: 403 • 405 • 450E • 402 • 410 • 455EB • 480i


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Blueair Classic particle filter hepasilent-pdp-image

HEPASilent™ technology

Uncompromised particle removal

Advanced HEPASilent™ technology removes at least 99.97% of all airborne particles like PM 2.5, pollen, dust, pet dander, and mold spores down to 0.1 microns.

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4x faster odor removal³

Removes gas, odor, smoke, VOC, exhaust, smog, and chemicals from the air faster, with no reduction in Clean Air Delivery Rate. ³Based on Blueair internal tests

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No chemical additives

DualProtection filters use high-porosity coconut carbon, free of chemical additives, to remove gaseous pollutants like odor naturally and efficiently.

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6-month filter life

To maintain optimum performance, we recommend changing your filter about once every 6-months when used 24 hours a day.

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Manufacturer recommended

Genuine Blueair replacement filters guarantee the superior performance of your air purifier and ensure your warranty remains intact.

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100% recyclable

This filter is 100% recyclable, so the only thing you're adding back into the environment is clean air.

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Traps particles for good

The gradient filter structure traps even the smallest particles and resists clogging to maintain maximum airflow.

Product Specs
Filter Type
Non-woven gradient PP and PE blend fibers and activated carbon granules.
Dimensions (H x W x D)
21 x 10 x 3.8 in (521 x 250 x 95 mm)
Number of filters
Filter frame material
Filter recycling
Recommended filter change
6 months (4,380 hours)

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