Reference Source

UL 441

What is the laboratory for UL 441?

For UL 441, laboratory is UL LLC; standard title is Standard for Gas Vents, verified against its source on 2026-09-17.

UL 441 | Standard for Gas Vents |

— osha.gov, retrieved 2026-08-10

Laboratory
UL LLC
Standard number
UL 441 verified
Standard title
Standard for Gas Vents verified
Sourceosha.gov
Verified
Review by
DatasetWhich OSHA NRTL is recognized for which test standard: all 21 labs' scopes of recognition, cross-referenced

Source

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

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