Replace powder room bathroom exhaust fan with new Panasonic 80cfm Replace master bathroom exhaust fan with a new 110 CFM fan only and move outside of the shower Replace second-floor hallway exhaust fan with a new Panasonic 110 CFM fan Install new 4 inch vent in with rooftop and downs for second-floor bathroom fans. 7/17. We returned today and replaced both bathroom exhaust fans of the second floor bathrooms and install new venting and through the roof gooseneck vent outs. We also removed the powder room bathroom exhaust fan installed a new Panasonic fan in this place as well. We also replace the kitchen sink wafer recessed light and the keyless light fixture in the basement crawlspace area.