F3MAX AllergenBlock Replacement Filter for 311i Max

F3MAX AllergenBlock Replacement Filter for 311i Max

Compatible with Blue Pure 311i Max; Not compatible with Blue Pure 311i+ Max • 311 Auto
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Blueair Diagram showing which air purifier model should be used for the filter
Blue Pure 311i Max replacement filter

Designed specifically for the Blue Pure 311i Max.

Find the name of your air purifier on the label inside your air purifier.

Blueair Blueair AllergenBlock reduces exposure to allergens
Extra protection
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.

Blueair Main filter
Main filter

Captures airborne particles, including pollen, dust, and pet dander allergens.

Blueair AllergenBlock defense
AllergenBlock defense

Neutralizes² over 90% of the allergen properties that can trigger discomfort.

Blueair Activated carbon
Activated carbon

Traps light household odors from pets, cooking and smoking

Blueair Blueair RealTrack Technology
Real-time filter
lifetime status

Only Blueair air purifiers use HEPASilent™ dual filtration technology for maximum filtration and minimum noise.

Blueair Blueair genuine filter
Genuine Blueair
replacement filter

Protect your air purifier from damage

caused by unofficial filters.

Blueair Image
Minimizes unhealthy allergens and germs*

The particle filter layer helps to minimize the airborne particles that can trigger allergy symptoms, including pollen, dust, mold spores*, pet dander, viruses*, bacteria*, and fine smoke particles.

Blueair Works 24/7, for six months straight
Works 24/7, for six months straight

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.

Blueair Keeps clean air flowing, resists clogging
Keeps clean air flowing, resists clogging

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.

  • Recommended filter change
    6 months (4,380 hours) when used 24 hours a day
  • Number of filters
F3MAX AllergenBlock Replacement Filter for 311i Max
What model air purifier is this filter compatible with?

This filter is compatible with the Blue Pure 311i Max air purifier.

What is a filter subscription?

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.