Exact model stated by the manufacturer
Blueair Blue Pure 121 replacement filter
Documented OEM reference: Blue Pure 121 Particle + Carbon Filter · F121PACF104507
An Extra Protection honeycomb variant (F121PACF101653) is also sold for the 121.
Limits. Does not establish fit for regional variants, other filter grades, or pre-filters.
Blueair official product page · US ↗
Source market: US · Checked 2026-10-20. No stock, price, or seller claim is made. Fit is not filtration performance.
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Cite this page
Use this text to cite the page. The last-updated date is the date of the latest change to its content.
Filter Ledger. “US Blueair Blue Pure 121 Replacement Filter”. https://filters.toolatlas.app/en-us/filters/blueair-blue-pure-121/. Last updated October 23, 2026.