Purifier Filter Match
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  2. 2Your part
  3. 3Where to get it

Winix replacement filter

Winix P450 / B451

Winix lists Filter E HEPA and carbon set, 113250, for US P450, B451. The Amazon action searches this reference; no exact retail product or pack has been approved.

Models listed by the manufacturer

  • P450
  • B451

Models checked: US. Match the full code on your label.

Where is my model number?

Before you buy

  • The source applies to the listed US models only; another regional model or suffix is not approved by a similar name.
  • Manufacturer set contents are distinct from merchant pack contents. No Amazon product, seller or pack was approved.
Find the complete model code
  1. Read the complete Winix model on the purifier label and retain every letter, digit and suffix.
  2. Match the label with one of the manufacturer-listed US codes on this page.
  3. Compare 113250, components and quantity on the final merchant listing; the search does not approve the listed item or pack.
Filter and fitting details
  • Winix explicitly names P450, B451 for Filter E, 113250.
  • The manufacturer describes a HEPA filter and a four-pack of disposable carbon pre-filters.
  • A manufacturer one-year replacement-set description does not establish retail pack contents or approve substitutions.

Manufacturer sources

Documentation checked Oct 12, 2026 by Codex (manufacturer documentation). We have not physically tested these filters.

Winix filter113250
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