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BC § 716.3.2
For fire-protection-rated glazing, the label shall bear the following identification required in Tables 716.3 and 716.6: "OH - XXX." "OH" indicates that the glazing meets both the fire protection and the hose-stream requirements of NFPA 257 or UL 9 and is permitted to be used in fire window openings. The placeholder "XXX" represents the fire-rating period, in minutes.
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