Bathroom Fan Discharge Direction Horizontal Duct Diameter 4 in Duct Shape Round Housing Finish Galvanized Housing Material Steel Heater Without Heater Includes Duct Connector With Damper Mounting Ears To Attach To Ceiling Joist Mounting Location Ceiling Exhaust Airflow @ 0.100 in SP 100 cfm Maximum Noise Level 5 sones Noise Level @ 0.100 in SP @ 5 ft 5 sones Maximum Coverage Area 90 sq ft Number of Speeds 1 Overall Depth 9 in Overall Height 6 in Overall Width 9 in