4′ KFI Classic, 120V/60Hz, 123cfm (Ruck) is a inline fan from Kootenay Filter Inc (KFI), designed for moving air through filters, hoods and duct runs in grow tents and rooms. The 4-inch impeller provides a good balance of pressure and airflow for common duct layouts, delivering around 123 CFM of airflow at 120V/60Hz. Use it for exhaust, intake or circulation wherever you need reliable, continuous-duty ventilation to keep temperatures and humidity in the ideal range.
