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Direct-drive downblast ventilators are designed for use where steady exhaust ventilation is needed under low to moderate static pressure conditions.

Agency Listing
  • All ventilators are UL Standard 705 listed
  • Ventilators are CSA listed according to Standard C22.2 No. 113-M1984 (Fans & Ventilators)

Features and Specifications
  • Downblast discharge design exhausts foul air from industrial and commercial buildings
  • Ventilators can be mounted on the roof or wall
  • Durable spun aluminum construction with steel support braces
  • Backward inclined aluminum fan wheel
  • Externally cooled motor compartment
  • Motor located out of discharge airstream
  • Motors are 115V or 115/230V, 60 Hz, ball bearing motors with Class B insulation
  • PSC motors included in standard design (shaded pole motor style used for 8" models)
  • One-piece removable exhaust hood
  • Inlet temperatures up to 170°F
  • Built-in bird screen to protect discharge and ensure safe, obstruction-free operation
  • Motor and wheel are easily detachable without removing ventilator from curb
  • Junction box mounted in motor compartment
  • Windband rolled bead for added strength and easy maneuverability
  • Welded curb cap corners eliminate water entry into ducts or building
  • All units are speed controllable

Accessories (available separately)
  • For more information, see Power Roof Ventilator Accessories
  • Speed controllers
  • Backdraft dampers
  • NEMA 1, NEMA 3R and NEMA 4 disconnect switches
  • Fixed mounting curbs
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