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Smoke & Heat Removal Roof Ventilator, Belt Driven


TUBSH is designed to remove smoke from buildings in the event of a fire. This unit features fusible link damper springs which force dampers to open when the fusible links melt at 165°F (73°C). The TUBSH is designed to meet the time/temperature standards – 500°F (260°C) for 4 hours, 1000°F (537°C) for 15 minutes, and snow load test for dampers set forth by UL, IRI, and SBCCI.

Sizes (impeller diameters)

  • 24 to 60 inches (610 mm to 1,525 mm)


  • Airflow to 70,700 CFM (120,100 m3/hour)
  • Static pressure to 1.5 inches w.g. (370 Pa)