RoHS compliant, sizes from 133mm (5.2") to 355mm (14") and voltages from 115V to 230V.  107 CFM to 1,324 CFM.  High efficiency inlet designs, lubricated maintenance-free ball bearings, vibration-free operation, compact and rugged rugged construction.  IP20/23/44 ratings w/40,000 hours operation.  Insulation class B/F.