Someone out there knows the answer to this question.  I do not.

What is required when a recessed piece of hardware is to be installed in a fire barrier?  This could apply to actuators for automatic operators, magnetic holders for fire doors or smoke doors, credential readers, and probably other things that I haven’t though of yet.

Is a special mounting box required?  Are there limitations on the size or material of that box?  Or maybe the component has to be surface-mounted on the wall?  Where is this stated in the codes or standards?

This is a question from a current project, so please leave a comment in the reply box if you know where to find this information.


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