UL 555S
What is the laboratory for UL 555S?
For UL 555S, laboratory is UL LLC; standard title is Leakage Rated Dampers for Use in Smoke Control Systems, verified against its source on 2026-09-17.
UL 555S | Leakage Rated Dampers for Use in Smoke Control Systems |
— osha.gov, retrieved 2026-08-10
- Laboratory
- UL LLC
- Standard number
- UL 555S verified
- Standard title
- Leakage Rated Dampers for Use in Smoke Control Systems verified
Source
- osha.govhttps://www.osha.gov/nationally-recognized-testing-laboratory-program/ul