Exact model stated by the manufacturer
Blueair Blue Pure 211+ replacement filter
Documented OEM reference: Blue Pure 211+ Series Filter
Blueair's page says this filter is compatible with Blue Pure 211+ and explicitly not compatible with Blue Pure 211+ Auto.
Limits. The Auto exclusion is material. Do not strip 'Auto' or treat the two similar names as aliases.
Blueair official product page ↗
Source market: US · Checked 2026-10-19. No stock, price, or seller claim is made. Fit is not filtration performance.