HB-330
The HB-330 heavy duty industrial backdraft damper features a double flanged galvanized steel frame and double thickness fabricated airfoil blades. External heavy duty linkage, blade counterbalance and ball bearings all are standard.
- Pressure: Up to 20 in. wg
- Velocity: Up to 6400 fpm
- Temperature: -40掳F to 250掳F
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HB-330
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