A door which has been constructed in such a manner that when installed in an assembly and tested it will pass ASTM E-152 “Fire Test of Door Assemblies” and can be rated as resisting fire for 20 minutes (1/3 hour), 30 minutes (1/2 hour), 45 minutes (3/4 hour) (C), 1 hour (B), or 1-1/2 hours (B). The door must be tested and carry an identifying label from a qualified testing and inspection agency.
Millwork Definitions
Fire-Rated Door
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