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         Model USR
        direct drive fans are centrifugal power roof ventilators designed for
        exhausting clean air.  Capacities range from 113 to 2770 CFM and up
        to 1 inch static pressure.
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        Model USR
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        Model USPV belt drive fans are centrifugal power roof ventilators
        designed for exhausting clean air.  Capacities range from 145 to
        40,608 CFM and up to 2 inch static pressure.  The aerodynamic
        design of the USPV impeller and orifice results in high air performance
        and low sound. | 
        
        
        Model USPV
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         Model
        USDURF and USDURG (restaurant exhauster) are direct drive
        upblast centrifugal exhausters.  Capacities range from 253 to 5,317
        CFM and up to 1 1/4  inch static
        pressure.  The USDURF is a clean air ventilator designed for high
        velocity vertical discharge. 
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        Model USDU | 
      
         Model USNURF 
         and USNURG
        (restaurant exhauster) are belt drive upblast centrifugal
        exhausters.  Capacities range from 74 to 33,374 CFM and up to 3
        inch static pressure.  Models USNUHP and USNUXP are high pressure
        exhausters for applications up to 5 inch static pressure.  The
        USNURF is a clean air ventilator designed for high velocity vertical
        discharge.
   
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        Model USNU |