Sample data from Engineering Database — 375 reference tables, deterministic calculators, and Engineering AI. Sign up free
Air Filter Merv Ratings: MERV 11
ASHRAE MERV rating cross-reference per ANSI/ASHRAE Standard 52.2 — MERV 1 through 16 with efficiency range group (E-1/E-2/E-3), particle size range controlled, arrestance value (MERV 1-4), example contaminants, typical HVAC applications, and representative filter media types.
| merv rating | efficiency range group | example contaminants | filter types | standard | typical applications |
|---|---|---|---|---|---|
| MERV 11 | E-2 | 1.0 to 3.0 µm size range: milled flour; lead dust; combustion soot; Legionella; coal dust; some bacteria; process grinding dust | Box-style wet-laid or lofted fiberglass; box-style synthetic media; minipleated synthetic or fiberglass paper; depths from 2 to 12 in. Pocket filters either rigid or flexible in synthetic or fiberglass; depths from 12 to 36 in. | ASHRAE 52.2-2017 | Food processing facilities; air separation plants; commercial buildings; better residential; industrial air cleaning; prefiltration to higher-efficiency filters; schools; gymnasiums |
What else is in Engineering Database
Iron Engine ↗Engineering AI at ironengine.ai
AI built for engineering. Searches the engineering database, performs calculations, gives source-backed engineering insights.
Get started for free ↗Reference Data375 engineering tablesMaterial properties, pipe and shape dimensions, code tables, and electrical ratings across mechanical, civil, chemical, electrical, materials, and manufacturing engineering.
Browse dataCalculatorsDeterministic engineering calculatorsSizing, checking, and conversion tools that run against the reference tables. Inputs are code-compliant, outputs are traceable to the source standard.
Browse calculators