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The terms "vault doors" and "file room doors" refer to assemblies consisting of the doors, single or in pairs, the frame into which doors are hung, and the necessary hardware. These assemblies are intended to provide fire resistance for periods designated by the classifications under conditions recommended for vaults and file rooms.
It is intended that classification shall register performance during the period of exposure and shall not be construed as having determined suitability for use after fire exposure. Published 1/31/1975.The terms "vault doors" and "file room doors" refer to assemblies consisting of the doors, single or in pairs, the frame into which doors are hung, and the necessary hardware. These assemblies are intended to provide fire resistance for periods designated by the classifications under conditions recommended for vaults and file rooms.
It is intended that classification shall register performance during the period of exposure and shall not be construed as having determined suitability for use after fire exposure. Published 1/31/1975.