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Blueair Blue Pure 411i Max / 411i+ Max / 411a Max replacement filter

Documented OEM reference: 411 Max series Particle + Carbon filter

Blueair's US page names 411i Max and 411i+ Max; the official Canada catalog also lists 411a Max in the 411 Max filter family.

Limits. Regional series wording varies. Confirm the complete purifier label and check the corresponding US or Canadian manufacturer listing; do not infer across older 411 / 411 Auto generations.

Blueair official product page · US ↗

Source market: US/Canada · Checked 2026-10-19. No stock, price, or seller claim is made. Fit is not filtration performance.

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Use this text to cite the page. The last-updated date is the date of the latest change to its content.

Filter Ledger. “CA Blueair Blue Pure 411i Max / 411i+ Max / 411a Max…”. https://filters.toolatlas.app/en-ca/filters/blueair-blue-pure-411i-max-411i-plus-max-411a-max/. Last updated October 23, 2026.