Before you buy
- The 250-series pack contains one combined filter, unlike the two-sided 300- and 400-series sets.
- These manufacturer-listed models were checked for the US. An international search or redirect does not approve another regional model or filter variant.
Find the complete model code
- Read the full Coway model on the rear or underside label.
- Match one of the listed models: Airmega 250, Airmega 250S, Airmega 250ART.
- Check AP-1720-FP and the complete Airmega 250-series Max2 filter name on the merchant page.
Filter and fitting details
- Coway lists manufacturer SKU 3109144 and one Max2 filter on the 250 / 250S / 250ART page. Amazon identifies the replacement as AP-1720-FP.
- The retained buying option is 1 Max2 filter. Check the final product reference, seller and quantity before ordering.
Manufacturer sources
Documentation checked Oct 12, 2026 by Codex (manufacturer documentation). We have not physically tested these filters.