Blue Pure 311 Auto Pre-filter
Compatible with Blue Pure 311 Auto
Fast & free shipping
30-day returns
Extended warrantyWhy you’ll love it
Replacement prefilter Arctic Trail for Blue Pure 311 Auto
Smart Filtration, you can trust
Our fabric pre-filters extend the life of primary filters, catching large airborne particles such as dust, lint, pollen, and pet hair.A hidden compartment in the fabric keeps the power cord hidden out of sight, and they're colorful — with different options to complement your space.
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As a B Corp, we’re part of a global community of businesses that meet high standards of social and environmental impact.
Meet our filters
Particle & Carbon
Our original filter. Removes allergens and traps light household odors from pets, cooking and smoke
SmokeBlock
2x more activated carbon than our original filter. Removes up to 99.99%³ of wildfire smoke
AllergenBlock⁵
Extra protection against allergens. Traps and neutralizes dust, pollen and pet dander
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Originally published on Blueair US
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