BD-300 Series

The BD-300 series backdraft dampers mount vertically to allow horizontal airflow and prevent reverse airflow. Dampers in this series: BD-300 with a flange on intake, BD-320 with a flange on discharge and BD-330, which does not have a flanged frame. All dampers in this series open by air pressure differential and close by gravity.

Pressure: Up to 2 in. wg
Velocity: Up to 1500 fpm
Temperature: Up to 180°F
Accessory to wall fans and centrifugal inline fans

Steel Frame

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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.

Certifications:

AMCA Air Leakage and Air Performance

Purchase Options:

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IN-STOCK PRODUCTS

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Codes:

ASHRAE 90.1

IECC (International Energy Conservation Code)

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