Greenheck Introduces New Bubble-Tight Damper

Release Date: September 22, 2008

Greenheck's new heavy duty HBTR-451 bubble-tight damper is designed to meet the requirement for zero leakage. The HBTR-451 features a silicone blade seal and double gland axle seal factory-leakage tested to ensure bubble-tight performance up to 30 in. wg (7.5 kPa) differential pressure. The HBTR-451damper is recommended for two-position shut-off applications including medical facilities and laboratories, food processing, military facilities, campuses, test laboratories, clean rooms, and microelectronic manufacturing.

Greenheck offers the most AMCA-licensed dampers in the industry and is the worldwide leader in manufacturing and distributing air movement and control equipment.

For more information about Greenheck products, visit or contact Greenheck, P.O. Box 410, Schofield, WI 54476-0410, (715) 359-6171, FAX (715) 355-2399.

Cheryl Aderhold


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