For bathroom over 100 sq ft use a large or exhaust fan to circulate the air.
Installing bathroom ceiling exhaust fan.
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Then use a screw to secure the duct connector to the edge of the hole so that it will line up with the exhaust on the fan housing.
I ve replaced lots of this style broan fan and they are very popular.
Use an extra long 3 8 inch diameter spade bit to bore a reference hole through the ceiling and into the attic.
And under while medium bath fans work well for bathooms 70 to 100 sq ft.
The duct should vent to the outside.
The first step in figuring out how to install a bathroom fan is cutting a hole based on the size of the fan you need.
Video tutorial on how to replace your bathroom exhaust fan in 5 minutes or less.
Some manufacturers suggest securing the duct connector to the edge of the ceiling hole.
Determine where it will attach the fan housing and secure it to the ceiling with a screw.
For optimum performance locate it between the shower and the toilet.