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 (wheel 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)