Dropin replacement of exhaust fan求建议？续

来源: 于 2025-10-10 11:18:10 [旧帖] [给我悄悄话] 本文已被阅读：次

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I was able to get smaller exhaust fans into old enclosure (boxes). one is to make sure weight support is good and the other is to make sure "air tight". In one case I used GreatStuff foam spray. They tend to drip down during drying. There is CFM requirement depending bathroom size.