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Pin kit · Filters and Replacement

What Is a MERV Rating? MERV 13 vs HEPA Explained

Every page on this site ships with its own pin artwork, drawn from the same EPA-sourced figures as the article, nothing on the pin that the page cannot prove.

a pin card showing MERV 13 cfm, the minimum clean air delivery rate must demonstrate at least 50% removal of the smallest particles tested
a pin card showing MERV 13 cfm, the minimum clean air delivery rate must demonstrate at least 50% removal of the smallest particles tested

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The vertical pin is served at a stable URL (roomandfilter.com/pin/what-is-a-merv-rating/image) so the media travels with the pin wherever it is saved.

What the pin points at

What MERV means on an air filter, why MERV 13 is the line that matters for fine particles, and how MERV 13 compares with HEPA (99.97% at 0.3 micron).

Board
Filters and Replacement
Pillar
Filters & Ratings
Read time
3 min
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Figures from the U.S. Environmental Protection Agency, retrieved 2026-08-30. This site shows no prices, by policy, the pin does not either.