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12 in. x 24 in. Louver – 900 CFM


Exhaust fans can only work in a darkroom equipped with fresh air supply louvers or some other kind of air supply. If there is no air supply to the darkroom the fan will be working against a vacuum and can do nothing. 900 CFM use with 744 series fans.



Doran A-1212 Exhaust Fan 12x12x4 airflow 400-800



12″ X 12″ LOUVER 450 CFM – USE WITH A1212 FAN