Certify that door hardware approved for use on types and sizes of labeled fire-rated doors complies with listed fire-rated door assemblies.
证明经批准使用的被标记防火门的类型和尺寸满足列出的防火门等级要求。
Certify that door hardware approved for use on types and sizes of labeled fire-rated doors complies with listed fire-rated door assemblies.
证明经批准使用的被标记防火门的类型和尺寸满足列出的防火门等级要求。
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