I ve replaced lots of this style broan fan and they are very popular.
Replacing bathroom exhaust fan without attic access.
What to consider before replacing your bathroom fan.
Because you can do everything related to replacement underside.
Not having attic access seems problematic to some people.
However it is not a big deal.
For this reason they ask how to replace a bathroom exhaust fan without attic access.
Attach the duct connector to the duct.
Once all this is done take hvac tape or a clamp and attach the duct connector.
Installing a bathroom fan without attic access mounting your new bathroom exhaust fan.
Wall switches for new vent fan if you want the new exhaust fan to use your old switch then no more.
Video tutorial on how to replace your bathroom exhaust fan in 5 minutes or less.