Designed specifically for the Blue Pure 311i+ Max.
Find the name of your air purifier on the label inside your air purifier.
against allergens
Blueair’s AllergenBlock¹ technology reduces your exposure to pollen, pet dander, and dust allergens, by neutralizing over 90%² of their sneeze-inducing properties once caught on the filter.
Captures airborne particles, including pollen, dust, and pet dander allergens.
Neutralizes² over 90% of the allergen properties that can trigger discomfort.
Traps light household odors from pets, cooking and smoking
lifetime status
Only Blueair air purifiers use HEPASilent™ dual filtration technology for maximum filtration and minimum noise.
replacement filter
Protect your air purifier from damage
caused by unofficial filters.
With the unique filter design at least 99.97%³ of airborne particles, even down to 0.1 microns, are removed, while using less energy and producing less noise.
To maintain optimal 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.
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.
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Dimensions(HxWxD)11.4 x 7.9 x 2.5 in in
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Product weight0.5 lbs
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Recommended filter change6 months (4,380 hours) when used 24 hours a day
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Number of filters1
This filter is compatible with the Blue Pure 311i+ Max air purifier.
Purchasing a filter subscription saves you 15% on all future replacement filter orders + free shipping. 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.
¹ AllergenBlock refers to inanimate allergens pollen, dust and pet dander.
² Based on ELISA deactivation testing of Pollen (Cry J1), Pet Dander (Fel d1, Can F1), Dust Mite Matter (Der f1) on the filter media in 60 minutes.
³ A flat shipping rate of $25.00 will be charged on filter shipments to Alaska, Hawaii, and Puerto Rico. Additional charges may apply for shipments over 30 lbs. A flat shipping rate of $5 will be charged on orders under $39 that are not part of filter subscription.