Exhaust Fan Discharge Direction Vertical Duct Diameter 6 in Duct Shape Round Housing Finish Painted Enamel Housing Material Steel Includes Backdraft Damper Exhaust Grille Maximum Airflow 354 cfm Exhaust Airflow @ 0.100 in SP 332 cfm Exhaust Airflow @ 0.000 in SP 354 cfm Maximum Noise Level 13.7 sones Noise Level @ 0.100 in SP @ 5 ft 13.5 sones Maximum Coverage Area 600 sq ft Number of Speeds 1 Overall Depth 10 in Overall Height 16 1/8 in Overall Width 15 5/8 in Phase 1