Can I Use UL Recessed Door Contacts On Fire Rated Doors?

Someone asked this in the New Products Show chat, but is worth generally discussing here:

Does anyone use UL listed recessed door contacts on FIRE-rated doors?

** ****** ** *********** point ***** **** '**-********' mean ** *******.

*****, *** ****** ** no. ************ * **** door ** *** ******** contacts ** **** ****** not ******* *** **** 80, *** ******** ********** allowed ***** ************* ** doors. ************, *********** *** limited ** ******* ***** hardware, *** ******** *****.

****, *** '** ******' of * **** ******, or ****** *** ***** of ********/****/**** ****** **** not **** ** *** be ********* **** * fire ****. *** ** rating/listing ****** ** ********, and **** ********* ***** being ******* ** *** heat ** * **** will *** ***** *** device ** *********** ** fall *** ** *******. Doing ** ***** ****** create * ******, *** it ** *** ********** with * ****-**** ** fire-door ******.

**** **** ****?

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****, *** *** ***! Just *** *******.

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***** - *** *** give ** ** ******* of **** * **** compliant **** ***** **** would **** ****?

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** *******, **** ***** can ** ****/********* ** look **** * ******* door. *** ****/*** ******** of **** ********** *** play * ****** (* hour ***** *** ******* than */* **** ******).

**********, * **** *** sliding/barn **** ***** ** firedoors ***********. **** *** typically ******** ** ************* slide ****** **** ********/******** **** ******** ** **** ************ being ****, *** ****** the ***** ******* **** open.

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****** *** *** *******. :) * ****** **** been **** *****...

**** ***** ******, * hour, **** ******

******* ******* **** ***** Door ******* (** **** even ****** ** * fire)?

** ***???

******* - * *** the *** *** ***** during ****, ** **** free ** **** ** a **** (**** **** is ****** ****) :)

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*** *** **** ** fire ***** *** ** to * *****.

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** *******, * '** rated' **** ****** ** not ***** ** ** rated ** **** **** subjected ** * ****, it **** ***'* **** off/break/create ******* ****** **** subjected.

******* *** *** ********* because **** *** ***** required ** '********** *****' the **** **** ****, and **** *** ** installed ******* ********* **** 80 ************* ** * frame (** ******** ******, etc)

*** *** ***** **** ELR *** ********, ***'** going ** **** * hour ***** ******** **** to **** *** ****** expensive. ** *******, **** are **** ** *** entire ***** **** ********, not *********** ******* ** the *****.

**, ** **** ** an **** **** * surface ******* **** *** modify *** **** ****** limits ** **** ** (and * ***'* ***** of ***), **** *** generally ** **** ** a **** ****.

**** *** ***. *** exit ****** ****** ***** to ** ** **** so ** *****'* **** fall *** ****** * fire ** ******* ******** holes **** **** *** rating, *** *** *** part ****** ***'* *****.

**** **** ****?

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**** ** * **** topic. * **** ***** even ********** ****. ** use **** ***** ******* on **** ***** **** frames. *********** ****** ** have * **** **** rated ******** **** ******* for ** ** * 3 **** ****.

*********** ** ** **** never *** ** ********* question **** ***** ** door ******** ** *********.

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**** ***** **** ****** what * **** **** is

**** ***** **** *** Frame ****** / ******* - ***********.***

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* **** *** (*** have **** * *****) once **** ** "***** are ** ****-***** *****, only ****-***** **********."

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