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Smoke & Heat Mixed Flow Fan


The QSLSH mixed flow fan is designed to remove smoke from buildings in the event of a fire. The QSLSH is UL listed for Smoke Control Systems – 500°F (260°C) for 4 hours and 1000°F (537°C) for 15 minutes.

The QSLSH mixed flow fan combines the benefits of axial flow and centrifugal flow fans. It offers the advantage of a compact design and straight-through airflow, as well as the preferred acoustic characteristics and high pressure capability.

Sizes (impeller diameters)

  • 18.25 to 89 inches (465 mm to 2,260 mm)


  • Airflow to 160,000 CFM (271,800 m3/hour)
  • Static pressure to 8 inches w.g. (1,990 Pa)

Product Catalog

Installation Manual

product specs

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