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F-Rating

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A rating usually expressed in hours, F-Rating indicates the length of time a fire-resistant barrier can withstand fire before being consumed, or permitting the passage of the flame through an opening in the assembly.

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  • F-Rating
    A rating usually expressed in hours, F-Rating indicates the length of time a fire-resistant barrier can withstand fire before being consumed, or permitting the passage of the flame through an opening in the assembly. F-Ratings are determined by ASTM E 814 (UL 1479).

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