Unverified87% confidenceDecision RuleTime unknown
换气扇的开孔尺寸(安装尺寸)与面板尺寸是两个不同参数,购买前需测量吊顶或墙面预留孔洞,常见集成吊顶规格为300×300mm,普通墙式为其外框尺寸需大于孔洞至少2cm用于遮盖
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