Unverified92% confidenceDecision RuleTime unknown
选购前必须先测量原地漏的下水管内径而非地漏面板尺寸，常见管径为50mm和75mm，硅胶芯需塞入管内，管径不符会漏气返臭。面板尺寸只需覆盖开孔即可
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