Classic 400 Series DualProtection FilterCompatible with 403 • 405 • 450E • 402 • 410 • 455EB • 480i
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Rids homes of pollutants and odors 4x faster⁰
Pure, high-porosity coconut carbon is 4x faster⁰
than our other filters at removing gaseous pollutan
ts, household chemicals and cleaners, volatile organic compounds (VOCs) and pet, smoking, and cooking odors.
When used as part of our HEPASilent™ filtration process, the DualProtection filter also efficiently removes 99.97% of airborne pollen, dust, mold, germs and fine smoke particles.
Keep your filter fresh and pollutants at bay
We recommend replacing your air purifier filter about every 6 months (when used 24 hours a day). That's because, just like a vacuum cleaner, over time air purifier filters can get clogged with pollutants, and even let unpleasant odors back into the room.
It's simple to replace in just a few quick steps, and easy to save with our filter subscription program.
Our unique HEPASilent™ filtration technology allows this filter to be less dense, meaning it requires less air pressure. With it installed, your air purifier will operate quieter while using less energy.
DualProtection filters are highly effective at removing gases and odors, and airborne particle pollutants, including allergens, pollen, dust, mold, pet dander, viruses, and fine smoke particles.
This filter's unique structure is designed to filter high volumes of air while trapping even the smallest particles. It maintains maximum airflow because it's engineered to resist clogging.
To maintain optimum performance, we recommend changing your filter about once every 6-months when used 24 hours a day. Don't forget to save with our subscription program.
Every aspect of this filter is engineered for wellness. It uses only pure, high-porosity coconut carbon to remove gases and odors. Filter fibers also resist bacteria and mold growth.
Filter TypeCarbon + Particle filter. Activated coconut shell carbon. Non-woven gradient Polypropelyne fibers. Free of chemicals and binders. Fiber shedding resistance.
Dimensions(HxWxD)20.5 x 9.8 x 3.7 in
Filter frame materialPaper
Filter recyclingYes, please check your local recycling facility for availability.
Recommended filter change6 months (4,380 hours) when used 24 hours a day
Number of filters1
This filter is compatible with the following Classic family models: 402, 403, 405, 410, 450E, 455EB, 480i.
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.
Purchasing a filter subscription saves you 15% on all future replacement filter orders + free shipping and extends your limited 1-year product warranty to an extended warranty for as long as you remain a subscriber. At the time of purchase, the subscription will automatically schedule filter deliveries at the recommended six months. You can always adjust this timeframe from the 'My Account' section.
No, Blueair filters are less dense than traditional HEPA filters, allowing our air purifiers to be quieter and more energy-efficient. Instead of HEPA filters, we use a combination of electrostatic and mechanical filtration that we call HEPASilent™ technology to achieve the same level of filtration efficiency - with less energy and noise.
Join free, decide how your filter is monitored, and when new ones get sent. Leave anytime.
Seeing a new filter at your door is like a celebration of your choice to breathe the best air.
Pure Air Program members get 15% off on every filter, plus extended warranty, and exclusive product perks.
⁰ Based on Blueair internal tests
¹A flat shipping rate of $25.00 will be charged on filter shipments to Alaska and Hawaii. Additional charges may apply for shipments over 30 lbs.