F3MAX+ AllergenBlock Replacement Filter for 311i+ Max
Compatible with Blue Pure 311i+ Max; Not compatible with Blue Pure 311i Max • 311 AutoAdd to cart options
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 strong household odors from smoke and wildfire particles.
lifetime status
Blueair's proprietary RealTrack algorithm accurately calculates the remaining filter lifetime based on fan speed, usage time, and pollution levels.
replacement filter
Protect your air purifier from damage
caused by unofficial filters.
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 more quietly while using less energy.
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.
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.
-
Dimensions(HxWxD)11.4 x 7.9 x 2.5 in in
-
Product weight0.5lbs
-
Recommended filter change6 months (4,380 hours) when used 24 hours a day
-
Number of filters1
This filter is compatible only with the Blue Pure 311i+ Max air purifier.
Press and hold down the LED button for 10 seconds to reset the replacement filter indicator.
Quick cleaning: Vacuum the fabric pre-filter every time you do a big cleaning at home or when you see dust building up. Vacuum the exterior of the fabric with a soft brush attachment.
Deep cleaning: Wash the fabric pre-filter every time you replace the Particle & Carbon filter, approximately every 6 months. Wash the fabric pre-filter in a washing machine according to the pre-filter’s label. Hang to dry.
Regular maintenance of your air purifier will help preserving optimal performance.
Join for free, decide your
delivery schedule, and cancel
anytime.
Seeing a new filter at your door is
a celebration of your choice to
breathe clean air.
Filter subscription members
get 15% off on every filter and
exclusive product perks.
Disclaimers
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.