Reference Source

UL 181

For UL 181, laboratory is UL LLC; standard title is Factory-Made Air Ducts and Air Connectors, verified against its source on 2026-08-10.

Laboratory
UL LLC verified
Standard number
UL 181 verified
Standard title
Factory-Made Air Ducts and Air Connectors verified
Sourceosha.gov
Verified
Review by
DatasetWhich OSHA NRTL is recognized for which test standard: all 21 labs' scopes of recognition, cross-referenced

What the source says

UL 181 | Factory-Made Air Ducts and Air Connectors |

— osha.gov, retrieved 2026-08-10

Source

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