Model HFSB – Hooded Roof Fan

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

Standard Features

• Sizes: 24” – 60”
• CFM Range: 5,320 – 42,656
• Motor: Heavy-Duty Belt-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
• Belts: Belts sized for 165% of driven HP, oil resistant non-static type
• 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
• Extended lubrication lines
• Hood Insulation – 1/2” or 1-1/2” thick
• High wind tie-down points