Schaefer WS-450 Aluminum Exhaust Fan Shutter Outlet 45 Inch evaporative air conditioner Schaefer WS-540 Is Constructed With

Schaefer WS-540 Is Constructed With Brushed Heavy Duty Aluminum

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Schaefer WS-450 Aluminum Exhaust Fan Shutter Outlet 45 Inch evaporative air conditioner Schaefer WS-540 Is Constructed WithSchaefer WS 450 WS 450 Aluminum Exhaust Fan Shutter Outlet 45 Inch Schaefer WS 450 aluminum shutter is built tough to last a lifetime in the harshest environments. Schaefer's aluminum fan shutters restrict the airflow to one direction & are utilized as building air flow inlets, for feeding exhaust fans, or to prevent air intrusion when exhaust fans are not operating. Features Constructed with brushed heavy duty aluminum which provides corrosion