Classic 400 Series Particle Filter
402PF
Alternative DualProtection replacement filter
Blueair Classic 400 Series DualProtection Filter – 402DPF replacement filter
Classic 400 Series DualProtection Filter (402DPF) fits Blueair Classic 402, Blueair Classic 403, Blueair Classic 405 and 4 more models according to the cited Blueair source.
Official manufacturer
Classic 400 Series DualProtection Filter
402DPF
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Quick fit check
Classic 400 Series DualProtection Filter fit and replacement facts
Part number402DPF
Compatible models7
Filter roleAlternative DualProtection replacement filter
Blueair recommends replacing the filter every 6 months under continuous operation.
Compatible Blueair models
Follow a model link for its complete primary, optional, specialty, and alternative filter list.
Buying checklist
What to check in a filter listing
Confirm that the listing names part 402DPF and one of the compatible models: Blueair Classic 402, Blueair Classic 403, Blueair Classic 405 and 4 more models. Similar-looking filters are not proof of fit.
Decide whether you want an OEM or aftermarket filter, then compare the included pieces, product photos, seller details, delivery estimate, and total price.
Care guidance
Replacement schedule
Blueair recommends replacing the filter every 6 months under continuous operation.
Usage conditions can affect service life. Follow the cited manufacturer guidance for this part.
Compare compatible options
Related Blueair filters for these models
These filters share at least one officially cited model within the same brand, but may serve a different primary or optional role. Check each part page before buying.
Frequently asked questions
How often should I replace the Blueair Classic 400 Series DualProtection Filter (402DPF)?
Blueair recommends replacing the filter every 6 months under continuous operation.
Which Blueair models use the Classic 400 Series DualProtection Filter 402DPF?
According to the official Blueair product page, Classic 400 Series DualProtection Filter (402DPF) fits Blueair Classic 402, Blueair Classic 403, Blueair Classic 405 and 4 more models. Verify the model label on your unit before ordering.
Do aftermarket 402DPF filters work?
Marketplace listings may be from the manufacturer or a third party. Match the exact part number 402DPF, review the listing details, and verify the model label on your unit before buying.
Manufacturer source
Official Blueair documentation identifies Classic 400 Series DualProtection Filter, SKU 402DPF, as compatible with Classic 402, Classic 403, Classic 405, Classic 410, Classic 450E, Classic 455EB, and Classic 480i.
Blueair Official Classic 400 Series DualProtection Filter
Source compatibility checked 2026-07-22. Recheck the listing and your purifier label before ordering.