UL 391
What is the laboratory for UL 391?
For UL 391, laboratory is Intertek Testing Services NA, Inc; standard title is Solid-Fuel and Combination-Fuel Control and Supplementary Furnaces, verified against its source on 2026-09-17.
UL 391 | Solid-Fuel and Combination-Fuel Control and Supplementary Furnaces |
— osha.gov, retrieved 2026-08-10
- Laboratory
- Intertek Testing Services NA, Inc.
- Standard number
- UL 391 verified
- Standard title
- Solid-Fuel and Combination-Fuel Control and Supplementary Furnaces verified
Source
- osha.govhttps://www.osha.gov/nationally-recognized-testing-laboratory-program/its