Exact model stated by the manufacturer
Rabbit Air BioGS SPA-421A replacement filter
Documented OEM reference: BioGS Classic Filter Replacement Kit · BIOGSKIT
Classic (first-gen) BioGS kit.
Limits. Does not cover BioGS 2.0.
Rabbit Air official product page · US ↗
Source market: US · Checked 2026-10-20. No stock, price, or seller claim is made. Fit is not filtration performance.
Other models listed for the same part
- Rabbit Air BioGP SPA-582A
One part listed for several models does not make those purifiers interchangeable.
Check the full model label in the finder →
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Rabbit Air
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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 Rabbit Air BioGS SPA-421A Filter”. https://filters.toolatlas.app/en-us/filters/rabbit-air-biogs-spa-421a/. Last updated October 23, 2026.