Bath Exhaust Fan Discharge Direction Horizontal and Vertical Duct Diameter 6 in Duct Shape Round Housing Finish Galvanized Housing Material Steel Heater Without Heater Includes Acoustic Insulation Grille Mounting Brackets Aluminum Backdraft Damper Mounting Location Ceiling Maximum Airflow 114 cfm Exhaust Airflow @ 0.100 in SP 101 cfm Exhaust Airflow @ 0.000 in SP 114 cfm Maximum Noise Level 0.4 sones Noise Level @ 0.100 in SP @ 5 ft 3 sones Number of Speeds 1