SECTION 715 OPENING PROTECTIVES  

715.5.8.1 Identification. For fire-protection-rated glazing, the label shall bear the following two-part identification: "OH - XXX." "OH" indicates that the glazing meets both the fire-resistance and the hose-stream requirements of NFPA 257 and is permitted to be used in openings. "XXX" represents the fire-protection rating period, in minutes, that was tested.

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