Greenheck’s Model HBT-221 is the HVAC industry’s first commercial-grade rectangular bubble-tight damper, company officials say. The damper’s blade design allows for a lower pressure drop than bubble-tight dampers with circular or oval blade designs. The new model features a flanged damper frame for easy mounting and is available with a full range of electric, pneumatic or manual actuator options. Each damper unit is factory-tested to ensure bubble-tight leakage performance and is ideal for use in medical facilities, universities, test laboratories and food processing.
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