Dropin replacement of exhaust fan求建议？续

https://bbs.wenxuecity.com/fdcj/1869218.html

 

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. 

所有跟帖： 

• Not sure what u meant -borisg- ♂ (0 bytes) () 10/11/2025 postreply 00:31:41

• 把新exhaust fan box 放 old exhaust fan box里 -RomaVacation- ♂ (0 bytes) () 10/12/2025 postreply 22:37:08