RoHS compliant forward curve AC centrifugal fans.  Sizes from 133mm (5.2") to 320mm (12.6") and 230V.  Airflow from 230 CFM to 5,886 CFM.  High efficiency inlet designs, lubricated maintenance-free ball bearings, vibration-free operation, compact and rugged rugged construction.  IP42 rating w/40,000 hours operation.  Insulation class F.