1 and 3.

来源: borisg 于 2025-07-10 07:53:18 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (96 bytes)

total is about 15*40 + 90 = 790.

2 is more appropriate for bathroom fan vent.

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• 谢谢回答 -gerhouse- ♀ 给 gerhouse 发送悄悄话 (0 bytes) () 07/10/2025 postreply 08:40:42

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