Fits checked Oct 1, 2026 · How we check
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Blueair · air purifier

Blueair Blue Pure 311i Max replacement filter

Use part F3MAX. Lasts up to 9 months depending on usage.

The filter that fits

Maker lists this model

Blueair 311i Max Particle + Carbon Filter

Blue Pure 311i Max Particle + Carbon Filter

Part number
F3MAXalso sold as 110037
How many
1 per unit
How often
Lasts up to 9 months depending on usage

Blueair does not state how many of these filters the unit holds; the count of one shown here is not stated by the maker.

Buy 311i Max Particle + Carbon Filter on AmazonManufacturer page

Opens an Amazon search for Blueair 311i Max Particle + Carbon Filter F3MAX. Check the listing says F3MAX.

See the sources

Does your exact model share this filter?

Blueair labels several versions of the Blue Pure 311i Max. Check the label on your unit.

  • Blue Pure 311i Max takes F3MAX
  • Blue Pure 311i+ Max different filter · Takes F3MAX+ (110038).

Look-alike models that take a different filter

The 311i+ Max takes F3MAX+ (110038), the 311 takes F311PACF108589 and the 311 Auto takes F311PACF105618.

Other genuine options from Blueair

Variants and kits the maker sells for this model. Same fit, different media or packaging.

Sources

High confidence: the manufacturer names this exact model on a live page. Each line is the page we read and the day we read it.

  • Which filter fits blueair.com Maker's own page checked Oct 1, 2026
    Compatible with Blue Pure 311i Max ... Blue Pure 311i Max F3MAX Replacement Filter ... This filter is only compatible with the Blue Pure 311i Max Air Purifier
  • How often blueair.com Maker's own page checked Oct 1, 2026
    Depending on usage, your filter will last up to 9 months.
  • What's in it blueair.com Maker's own page checked Oct 1, 2026
    Main filter captures dust mite matter allergen & pet dander allergen ... Activated Carbon Traps light household odors from smoke, cooking odors and more
Show all 4 sources

Which filter fits

  1. blueair.com Maker's own page checked Oct 1, 2026
    Compatible with Blue Pure 311i Max ... Blue Pure 311i Max F3MAX Replacement Filter ... This filter is only compatible with the Blue Pure 311i Max Air Purifier
  2. blueair.com Maker's own page checked Oct 1, 2026
    Blue Pure 311i Max Particle + Carbon Filter, sku 110037: "F3MAX replacement PAC filter for 311i Max (3350i)"

How often

  1. blueair.com Maker's own page checked Oct 1, 2026
    Depending on usage, your filter will last up to 9 months.

What's in it

  1. blueair.com Maker's own page checked Oct 1, 2026
    Main filter captures dust mite matter allergen & pet dander allergen ... Activated Carbon Traps light household odors from smoke, cooking odors and more