Bathroom Fan Discharge Direction Horizontal Duct Diameter 4 in Duct Shape Round Housing Material Steel Heater Without Heater Includes Automatic Backdraft Damper Mounting Location Ceiling Exhaust Airflow @ 0.100 in SP 50 cfm Maximum Noise Level 0.5 sones Noise Level @ 0.100 in SP @ 5 ft 0.5 sones Maximum Coverage Area 45 sq ft Number of Speeds 1 Overall Depth 9 1/4 in Overall Height 5 3/4 in Overall Width 10 in Lighted Without Light Phase 1