Reference Source

UL 555S

What is the laboratory for UL 555S?

For UL 555S, laboratory is Intertek Testing Services NA, Inc; standard title is Smoke Dampers, verified against its source on 2026-09-17.

UL 555S | Smoke Dampers |

— osha.gov, retrieved 2026-08-10

Laboratory
Intertek Testing Services NA, Inc.
Standard number
UL 555S verified
Standard title
Smoke Dampers verified
Sourceosha.gov
Verified
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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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