US Fan Direct Drive Down Blast Roof Exhaust Fan 1725 RPM .5 HP 120 Volts, 1 Phase


US Fan

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U PRN135G-3-1725 RPM-.5HP-120V-1PH



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Model PRN direct drive fans are centrifugal power roof ventilators designed for exhausting clean air. This model has a max CFM of 2,160. The PRN is a downblast exhauster suitable for all types of commercial and institutional buildings such as schools, hospitals, office buildings, and retail stores.


  • Hoods constructed of heavy gauge aluminum, die formed with rolled bead for strength
  • Curb base and inlet are one piece with continuous welded corners
  • Steel fasteners are zinc dichromate plated
  • Heavy gauge galvanized wire birdscreen
  • Heavy gauge corner support brackets transmit motor and impeller weight to curb base
  • Conduit post for ease of electrical wiring

Airfoil Centrifugal Wheel

  • Aluminum construction with backward curved hollow airfoil blades
  • Non-overloading design for safe operation
  • Precision balanced for smooth vibration free operation


  • Continuous duty motors located outside the airstream
  • Motor compartment is ventilated by a "forced air" cooling system
  • Factory wired with polarized disconnect plug (except explosion resistant motors)

Product Specifications

More Information
US Fan Direct Drive Down Blast Roof Exhaust Fan 1725 RPM .5 HP 120 Volts, 1 Phase
Weight (in lbs) 51.000000
Manufacturer US Fan
Drive Type Direct
Maximum CFM 2160
Sone 15.9
Wheel Size 14"
Motor RPM 1725
Horsepower 0.5
Horsepower .5 HP
BHP .337
Curb Cap Size 21 x 21"
Warranty 2 Year Comprehensive Warranty
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