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Unverified88% confidenceDecision RuleTime unknown

测量门洞后帘子宽度应比门框实际宽度大3-5cm、高度大2-3cm，留出重叠量，否则边缘无法贴合门框会漏缝

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Unverified测量门帘尺寸时应量门洞外墙面可利用宽度而非门框内径，帘杆安装点通常在门框上方10-15cm处，以确保帘布上沿高于门框、避免顶部漏光93% similar Unverified选购时门帘尺寸应比实际门洞宽3-5cm、高2-3cm，留出重叠余量保证闭合，尺寸买小会导致边缘漏缝93% similar Unverified标准门洞门帘常见规格为宽90cm×高200cm和宽100cm×高210cm，购买前测量净门洞宽度需加5-10cm重叠量确保密封，高度以帘底距地2-3cm为宜90% similar Unverified门帘宽度应比门框实际宽度大10-20cm，让两侧各多出5-10cm重叠，避免侧漏光和边缘缝隙暴露室内；高度需比门洞长3-5cm，落地时才能完全遮蔽90% similar Unverified门帘宽度应比门框实际宽度大10-20cm，高度需比门框高5-10cm，确保帘子自然下垂时能完全遮盖门洞两侧缝隙，避免露光露缝90% similar

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