Bath Exhaust Fan Discharge Direction Horizontal and Vertical Duct Shape Rectangular Housing Finish Galvanized Housing Material Steel Heater Without Heater Includes Acoustic Insulation Grille Mounting Brackets Aluminum Backdraft Damper Mounting Location Ceiling Maximum Airflow 197 cfm Exhaust Airflow @ 0.100 in SP 246 cfm Exhaust Airflow @ 0.000 in SP 267 cfm Maximum Noise Level 4.5 sones Noise Level @ 0.100 in SP @ 5 ft 2 sones Number of Speeds 1 Overall Depth 14 in