L liangjia 知名会员 注册 2006-06-19 消息 216 荣誉分数 2 声望点数 178 2009-06-16 #1 好像这里的Townhouse 1 楼 washroom ceiling 排气扇都是互通互排的，无外排口。遇上邻居吸烟，很快二手烟通过排气扇缺口昵漫整个卫生间。能否将其堵塞？谢谢
Z zipped 知名会员 注册 2004-09-29 消息 331 荣誉分数 23 声望点数 128 2009-06-16 #2 There should be a check valve with the ceiling fan, if not, add one yourselves. The check valve is to stop cold air from coming in during winter.
There should be a check valve with the ceiling fan, if not, add one yourselves. The check valve is to stop cold air from coming in during winter.
L liangjia 知名会员 注册 2006-06-19 消息 216 荣誉分数 2 声望点数 178 2009-06-16 #3 Thanks. Where I can buy it & is it easy to install? Should it be sealed?
