Unverified85% confidenceSolutionTime unknown
定制卷帘测量：内装量窗洞净宽减1-2cm，外装量窗洞外沿每侧加5-10cm并预留顶部安装高度10-15cm，先确定安装方式再测量避免尺寸报废
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Unverified定制尺寸测量：内嵌安装（装在窗洞内）宽度应减1-2cm留缝，会牺牲侧边遮光；外挂安装（装在墙面/窗框外）宽度每边加宽10-15cm、上方加高10-20cm才能有效遮挡漏光，全遮光务必选外挂91% similarUnverified定制百叶帘测量误差控制：内嵌安装成品宽度应比窗洞实测小0.5-1cm避免卡窗，外挂则每边多留5cm以上盖住漏光；建议同一窗洞多点测量取最小值，老房窗洞常不方正90% similarUnverified尺寸测量时内嵌安装（窗洞内）需比窗洞尺寸小1-2cm留活动间隙，外挂安装需比窗户两侧各多10cm、上方多15cm以增强遮光遮挡效果89% similarUnverified测量安装尺寸时，内嵌式安装（帘框在窗洞内）需减去2-3cm避免卡顿，外挂式安装需每侧多出窗框10-15cm防漏光；卫浴小窗常见宽度40-80cm，测量宽高各3点取最小值89% similarUnverified选购前测量窗宽后应按窗宽×1.05再加两侧各15-20cm延伸量确定杆/轨长度，遮光帘需超出窗洞两侧使闭合时侧边不漏光；伸缩杆要选实际可调范围覆盖目标长度且预留≥10cm余量，避免拉到极限承重下降88% similar
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