UL 155
For UL 155, standard title is Tests for Fire Resistance of Vault and File Room Doors; nrtl is SWRI; laboratory is Southwest Research Institute; status is currently recognized, recorded from its source on 2026-08-10.
- Test standard
- UL 155 verified
- Standard title
- Tests for Fire Resistance of Vault and File Room Doors verified
- NRTL
- SWRI verified
- Laboratory
- Southwest Research Institute verified
- Status
- currently recognized our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
UL 155 | Tests for Fire Resistance of Vault and File Room Doors |
— osha.gov, retrieved 2026-08-10
Source
- osha.govhttps://www.osha.gov/nationally-recognized-testing-laboratory-program/swri