I am needing suggestions. I have a downstairs bathroom that need an exhaust fan put in. There is a light in the ceiling, however there is no way to get an exhaust duct in without ripping out the ceiling. I am needing this for moisture removal due to shower starting to mildew the ceiling. The bathroom is on an exterior wall of the house on 1st floor. Would it be better to install something high in the wall or is there another option for a ceiling installation?

What You'll Have To Do Is Cut In A 4" Hole On The Outside Of The Wall---cutting Also The Band Of The Second Story, Once Youve Done This Slide The 4" Vent Pipe In With A Flex Pipe Attached, Once You Cut In The Fan In The Ceiling Pull The Flex Down Out Of The Hole And Attach It To The Fan, Then Install The Fan, You May Need To Add A 2x4 Or 2 To Attach The Fan Housing, Good Luck