Hybrid Rooftop Ventilators Made in America

Phone Kurt Shafer – Founder and Inventor 951-296-3611

Welcome to  Thorwaldson Tornado Hybrid Rooftop Ventilators.

Rooftop ventilation has been limited to one of two choices – gravity ventilators or motorized ventilators.

The Thorwaldson design offers you the highest performance available because the  Tornado uses a powerful motor and blade to move 1000s of CFM under power and pull air even at high static pressures.

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