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2. Fire door - Wikipedia

   en.wikipedia.org/wiki/Fire_door

   Fire-resistance rated door, with wire mesh glass vision panel Industrial grade fire door rated to hydrocarbon curve and blast resistance Double fire door immediately after 3-hour fire test inside a 4-hour rated Durasteel wall Double fire door after 3-hour fire test in a 4-hour Durasteel wall, during successful 45PSI (3.1 bar) hose stream test leading to a UL Listing [1]

3. UL (safety organization) - Wikipedia

   en.wikipedia.org/wiki/UL_(safety_organization)

   The UL enterprise [4] is a global private safety company headquartered in Northbrook, Illinois, composed of three organizations, UL Research Institutes, UL Standards & Engagement and UL Solutions. Established in 1894, the UL enterprise was founded as the Underwriters' Electrical Bureau (a bureau of the National Board of Fire Underwriters ), [ 5 ...

4. Standards for Alarm Systems, Installation, and Monitoring

   en.wikipedia.org/wiki/Standards_for_Alarm...

   The Underwriters Laboratories' UL 365 is a safety standard that governs the construction, performance, and maintenance of police station-connected burglar alarm units and systems. These systems are designed primarily for use in mercantile premises, including mercantile safes and vaults, as well as bank safes and vaults.

5. File:Underwriters' Laboratories, 207-231 East Ohio Street ...

   en.wikipedia.org/wiki/File:Underwriters...

   English: The Underwriters' Laboratories buildings are of interest historically because they served as the headquarters from 1905 to 1979 of the well-known organization in the United States dedicated to the examination and testing of appliances, devices, machinery and materials in respect to life and fire hazards and accident prevention.

6. Fire test - Wikipedia

   en.wikipedia.org/wiki/Fire_test

   UL 1709 Rapid Rise Fire Tests of Protection Materials for Structural Steel UL 2085 Protected Aboveground Tanks for Flammable and Combustible Liquids EN 16034 Pedestrian doorsets, industrial, commercial, garage doors and openable windows – Product standard, performance characteristics – Fire resisting and/or smoke control characteristics

7. Fire-resistance rating - Wikipedia

   en.wikipedia.org/wiki/Fire-resistance_rating

   A fire-resistance rating typically means the duration for which a passive fire protection system can withstand a standard fire resistance test. This can be quantified simply as a measure of time, or it may entail other criteria, involving evidence of functionality or fitness for purpose.