Model HFS – Hooded Roof Fan

Model HFS Hooded Direct-Drive Filtered Supply Fans provide fresh or make up air that is cleansed of dust and other entrapped particle matter. Model HFS helps the building owner and occupants to meet health and air pollution requirements.

The Model HFS utilizes a Direct-Drive motor. For a Belt-Drive model, see the Model HFSB Filtered Supply Fan.

Standard Features

• Sizes: 24” – 60”
• CFM Range: 5,320 – 42,656
• Motor: Heavy-Duty Direct-Drive Motor
• Propeller: High performance statically and dynamically balanced
• Housing: Heavy gauge galvanized steel with vertical, interlocking welded seams
• Material: Deep Spun Venturi for high efficiency
• Fan Base: All welded fan base
• Drive: Variable Pitch to 7-1/2 HP
• Pillow Block Bearings: Self-aligning, for a minimum (L50) life > 200,000 hours at maximum operating speeds.
• Hood: Hinged to provide easy access to motors, belts, pulleys, and propellers.
• Angle Drive Frame: Bolted base assembly provides firm base and accurately aligns power assembly.

Optional Features

• Dampers:
  • Model RBD gravity dampers
  • Motorized
  • Model RVC heavy-duty backdraft dampers
• Testing: UL-705
• Safety guards
• Coatings
  • Color-to-match enamels
  • Epoxies
  • Urethanes
  • Urethane powder coating
• Disconnect switches
  • NEMA 1 – indoor general purpose
  • NEMA 3r – exterior mount, rain-tight
  • NEMA 4 – water-tight and dust-tight
• Hood Insulation – 1/2” or 1-1/2” thick
• High wind tie-down points