Commercial Fan, Discharge Direction Horizontal and Vertical, Duct Diameter 8 in, Duct Shape Round, Housing Finish Not Applicable, Housing Material Galvanized Steel, Heater Without Heater, Heater Type Without Heater, Heater Wattage Not Applicable, Includes 8-Way Adjustable Mounting Brackets, Mounting Location Ceiling, Maximum Airflow 230 cfm, Exhaust Airflow @ 0.100 in SP 233 cfm, 246 cfm, Exhaust Airflow @ 0.000 in SP 253 cfm, 267 cfm, Maximum Noise Level 1.3 sones