Panel Mounted Hazardous Location Exhaust Fan Assembled Assembled Blade Diameter 24 in Blade Material Aluminum Control Type Rotary Dial Drive Type Direct Drive Duct Diameter Not Applicable Exhaust Airflow @ 0.000 in SP 5 520 cfm For Cut-Out Height 28 in For Cut-Out Width 28 in Frame Finish Powder Coated Frame Material Steel Guard Finish Chrome Guard Material Steel Guard Type Intake Hazardous Location Class Class I Div 1 Group C and D Class II Div 1 Group F and G