Description: The Model HBT-221 is a commercial-grade, rectangular, bubble-tight damper with square blades. It features a blade seal mechanically fastened to the blade that is field-replaceable; 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. Designed for isolation or decontamination applications, the HBT-221 damper is ideal for medical facilities, universities, test laboratories, and food processing.
Contact: 715-359-6171; www.greenheck.com;