HTOD-331

The HTOD-331 heavy duty industrial tornado damper protects against tornadoes and sudden pressure changes. This model has a double flanged frame with single thickness fabricated blades.

Closes in the opposite direction as normal airflow
Pressure: Up to 83 in. wg
Velocity: Up to 6400 fpm
Temperature: -40°F to 250°F
Pressure Rise or Decrease: 3 psi

Tornado Dampers

Damper Selection Guide

Which damper best fits the application? Greenheck’s damper interactive selection guide removes the guesswork. Find blade type, velocity, pressure, AMCA listings, submittals, drawings and more, all in one easy-to-use format.

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