Home / Air purifier filters / 115115 (Filter A, Size 21)
Air Purifier Replacement Filters
Replacement Filter Set for Winix 5500-2, 5300-2, C535, AM90, P300 — True HEPA + 4 Carbon
$22.99HEPA every 12 mo · carbon every 3 mo
Guaranteed to fit these models
We verified this part against the models listed. If it doesn't fit a model we named, the return ships on us.
| Replaces (OEM ref) | 115115 (Filter A, Size 21) |
|---|---|
| Filtration / build | washable AOC pre-filter → True HEPA → 4× activated-carbon panels |
| Grade | True HEPA H13 |
| Pack | 1 True HEPA + 4 carbon panels |
| Replacement window | HEPA every 12 mo · carbon every 3 mo |
Price shown is a representative market price for the compatible part (market_snapshot); on the live store the price you see is the price you pay. Fit data is manufacturer-documented. Generic vs OEM →