Ceiling Ventilator Discharge Direction Horizontal and Vertical Duct Shape Rectangular Housing Finish Galvanized Housing Material Steel Heater Without Heater Includes Backdraft Damper Mounting Brackets Mounting Location Ceiling Maximum Airflow 812 cfm Exhaust Airflow @ 0.100 in SP 782 cfm Exhaust Airflow @ 0.000 in SP 812 cfm Maximum Noise Level 8.4 sones Noise Level @ 0.100 in SP @ 5 ft 8.3 sones Maximum Coverage Area 700 sq ft Number of Speeds 1 Overall Depth 18 in