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Louvered Penthouse Gravity Relief Ventilator


The TEL Louvered Penthouse Ventilator is designed for gravity relief applications and features a low silhouette design. The TEL is louvered on all four sides for a full 360° perimeter opening and is constructed with double water and snow baffles for added weather protection.

Sizes (impeller diameters)

  • 12 to 144 inches (305 mm to 3,660 mm) square throat sizes
  • 3 to 20 tiers high


  • Airflow to 85,700 CFM (145,600 m3/hour)
  • Static pressure to 0.15 inches w.g. (40 Pa)