Search·Coway
When you already know your purifier’s model number, this page shows the replacement filter numbers we match to it—then you can compare with your old filter and shop.
Brand
Coway
Model Airmega 300S
Coway Airmega 300S Air Purifier
Series: Airmega 300/400
These filter part numbers are matched to this air purifier model in our reference. Compare the OEM number with the label on your current filter or your owner’s manual before you buy.
Your replacement
COWAY-AMI400-RF
Airmega 300 / 400 series replacement set
Replace about every 12 months
All details for this part (notes, compatible models, buying options when listed)
Notes & next steps
Search again if you need a different model or part number.