The next step in your bathroom fan installation is to attach the fan enclosure to the joist with screws.
Bathroom exhaust fan attic installation.
Cut or push back the insulation leaving a 6 inch gap between the unit and insulation.
The duct should vent to the outside.
Exhaust fan installation installing an exhaust fan requires electrical connections and ventilation to the exterior of your home.
Exhaust fans mounted on an exterior wall vent directly outside without any ductwork.
Through the roof or an exterior gable wall.
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.
Options for venting a bathroom exhaust fan include best to worst.
Video tutorial on how to replace your bathroom exhaust fan in 5 minutes or less.
Be sure to install the duct in the position specified by the instructions so the housing will line up correctly.
Cut pieces of a 2 foot x 4 foot board to fit between the joists blocking off the fan from the insulation.
Attach wood pieces with screws.