fire rated hinge label

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Fire labels (UL, ITS/WHI or FM) are located as follows: Butt Hinges and Pivots: On the doors the fire label is located on the hinge edge between the top and 2nd hinge preparation. On the fram...
The UL fire label is only applied to the device center case cover at the factory when the device is built.  This label can not be sold or replaced with a new one.
There is no fire rating for butt hinges, but NFPA 80 says to use steel material and ball bearing hinges for fire rated openings.
A Dutch Door is a door having two separate leaves, hung one over the other: Usually equipped so that both leaves can be operated Usually in single doors applications but sometimes specified ...