Agricultural Exhaust Fan Assembled Assembled Blade Diameter 48 in Blade Material Steel Drive Type Direct Drive Exhaust Airflow @ 0.000 in SP 19 100 cfm For Cut-Out Height 55 1/2 in For Cut-Out Width 52 7/8 in For Maximum Wall Thickness 8 in For Minimum Wall Thickness 6 in Frame Finish Galvanized Frame Material Steel Guard Finish Zinc Plated Guard Material Steel Guard Type Exhaust Housing Material Steel Housing Finish Galvanized Includes Mesh Screen Includes Dehumidistat No