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Unverified90% confidenceDecision RuleTime unknown

选购前必须实测管道内径：常见公共烟道预留孔为160mm或180mm，油烟机排烟管多为160mm，买错口径会漏烟且无法卡紧

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Unverified国内油烟机排烟管主流管径为160mm（新国标）和180mm，老房多为160mm；购买前必须实测烟机出风口外径，公制铝箔管标称160实测常为152-158mm，需配套160转接圈避免漏烟85% similar Unverified国标公共烟道预留孔径多为160mm或180mm，家用油烟机出风口常见150mm，需配150转160/180变径圈或止逆阀法兰盘实现密封过渡83% similar Unverified购买前务必量地漏内径而非外沿：常见排水管口径为50mm/75mm/110mm，防堵盖标称尺寸多按内径设计，标100mm的产品通常适配110mm管口，标错一档会导致卡不住或漏缝73% similar Unverified气嘴长度需匹配轮圈高度：普通低框圈选40-48mm即可，中高框碳刀圈需60mm甚至80mm以上，否则气嘴露出不够无法正常连接气筒73% similar Unverified气嘴长度需匹配轮组框高，低框轮组选42mm即可，中高框（40-50mm）选60mm，高框（50mm以上）必须选80mm，否则气嘴露出不够无法正常打气72% similar

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