CSA/AM Z21.66

For CSA/AM Z21.66, standard title is Automatic Vent Damper Devices for Use With Gas-Fired Appliances; status is listed as appropriate, recorded from its source on 2026-08-10.

Test standard: CSA/AM Z21.66 verified
Standard title: Automatic Vent Damper Devices for Use With Gas-Fired Appliances verified
Status: listed as appropriate our reading

Sourceosha.gov

Verified2026-08-10

Review by2026-11-08

DatasetWhich OSHA-recognized labs (NRTLs) can certify to a given test standard

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

What the source says

CSA/AM Z21.66 | Automatic Vent Damper Devices for Use With Gas-Fired Appliances |

— osha.gov, retrieved 2026-08-10

Source

osha.govhttps://www.osha.gov/nationally-recognized-testing-laboratory-program/list-standards

Last verified against source: 2026-08-10. Due for re-check by 2026-11-08. This page as Markdown · OKF bundle · full dataset as JSON.