Blueair Dual Protection Filter for Classic 400 Series
The next generation of advanced carbon filters, Blueair’s DualProtection filters achieve ultimate particle, gas and odor removal. This filter replaces the previously available, Classic 400 Series SmokeStop filter.The pure, high-porosity coconut carbon is free of chemical additives and highly efficient at removing gaseous pollutants like PM 2.5, smoke, VOCs, exhaust, smog, odors and airborne chemicals.
Blueair’s HEPASilent™ filtration process captures 99.97% of airborne particles down to 0.1 micron in size.
HEPASilent technology unites the best in electrostatic and mechanical filtration. Its revolutionary combination of advanced filter media and an encapsulated ion particle charging chamber ensures that your Blueair purifier delivers results far superior than either mechanical or electrostatic technology alone.
Airborne particles pass through a chamber of the Blueair air purifier to get electrically charged before passing through the gradient structure of our filters. The charge causes the polluted particles to adhere effortlessly to the filter media, capturing even fine particles such as tobacco smoke.
Traps particles for good
The gradient structure of Blueair filters traps particles of all sizes while maintaining maximum airflow. It resists clogging and won't re-release particles back into the air, even when the filter is heavily loaded. Blueair filter media is ultrasonically bonded to prevent filter fibers and other particles from being added back into your environment. The only thing that comes out of our filters is clean air!
The naturally antibacterial polypropylene fibers in Blueair filters prevent bacteria and mold growth, so our filters never put bacteria and mold back into the air.
Blueair filters save energy thanks to its low dense design and the fact that less pressure is needed to push air through the filters. Our filters are also recyclable, so the only thing you’re adding back into the environment is clean air.
Due to the use of both electrostatic and mechanical filtration, the filter media in Blueair filters is less dense than comparable media. Lower density enables air to move through the filter at a lower pressure, so you get high performance with a whisper-silent delivery of clean air.
Filter Type: Gradient filter with ultrasonically bonded polypropylene fibres free of chemicals and binders. Naturally anti-bacterial. Fiber shedding resistant.
Dimensions (H x W x D): 454 x 365 x 45mm (18 x 14 x 1.8 inches)
Number of filters: 1
Filter frame material: Paper
Filter recycling: Plastic
HEPASilent technology: Certified effeciency 99.97% for particles down to 0.1 micron such as dust pollen, bacteria, virus, pet dander, mold spores and other airborne particles with additional sheets of activated carbon to remove gaseous pollutants.
Recommended filter change: 6 months (4,380 hours) when used 24 hours a day
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