Air Handling Centrifugal / 6000 series "Economical"centrifugal fans

6100 Unifoil Square body fan.
6200 Ultrafoil Square body fan
6300 Unifoil Square body plug fan.
     
6500 Unifoil Swing out fan.
6600 Ultrafoil Swing out fan
6700 Forward Curve square plug fan
     
6800 Ultrafoil Square Plug Fan