Bath Exhaust Fan Discharge Direction Horizontal Duct Diameter 6 in Duct Shape Round Housing Finish Galvanized Housing Material Steel Heater Without Heater Includes Backdraft Damper Mounting brackets Mounting Location Ceiling Maximum Airflow 197 cfm Exhaust Airflow @ 0.100 in SP 195 cfm Exhaust Airflow @ 0.000 in SP 197 cfm Maximum Noise Level 5.5 sones Noise Level @ 0.100 in SP @ 5 ft 5.5 sones Number of Speeds 1 Overall Depth 13 7/8 in Overall Height 7 in