Nail or screw "Snap-Lock" mounting bracket to ceiling joist.
Use the drywall thickness gauge to determine the correct ceiling penetration.
The fan can snap in facing right or left. Fit the notch located on the edge of the housing onto the "Snap-Lock" bracket and snap into place.
Connect the wiring and ductwork observing local building codes.
Attach the self adjusting molded grille with standard style wire clips (supplied), by squeezing the clips and inserting through the slots in the fan housing.