Unverified80% confidenceCautionTime unknown
购买前需测量自家马桶坐圈内孔前后长度和左右宽度，多数产品适配内孔前后长度28-40cm；智能马桶或异形马桶（如无安装孔、盖板一体式）多数扶手无法螺丝固定
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80%
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Unverified购买前必须测量自家马桶口内径（前后长×左右宽）与外沿形状，方形/D形/异形马桶与通用椭圆款不兼容，搁置式增高器需卡入内圈，尺寸不符会晃动移位86% similarUnverified购买前需测量自家马桶圈外沿尺寸，约40×38cm的通用规格适配大多数标准圆形/椭圆形马桶，但对异形马桶、加大号马桶圈覆盖可能不完整。85% similarUnverified凹型贴合马桶底座的踏板需先测量马桶底座宽度：多数产品凹槽设计针对标准马桶底座，落地式（一体式）或大底座马桶可能无法贴合，购买前测量马桶底座最宽处与踏板凹口尺寸85% similarUnverified带阶梯/扶手一体式的坐圈需确认马桶前后长度：分体式马桶（V型口）内长通常≥42cm，缩短型/小户型马桶仅38cm左右，购买前测量马桶口内长再选，否则阶梯型坐圈无法卡稳82% similarUnverified坐便圈内径需与马桶开口匹配，标准家用马桶开口多为长圆形（约36-42cm）或圆形（约33-38cm），选购前应测量自家马桶开口内径，圈体外缘需比马桶开口大2-3cm才能稳定卡住不下陷81% similar
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