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Dampers Commitment to Testing and QualityGreenheck's on-site damper testing laboratories have established the company as the industry leader for testing the latest version of AMCA, ANSI, ASHRAE, UL and other industry standards of performance. Click on the links below to view a video of test procedures. The UL 555 video presentation demonstrates our ability to test, and qualify, fire dampers in accordance with UL 555. This video shows how Greenheck conducted the Quick Connect Breakaway Test to receive UL qualification for connecting a manufactured flange system by Ductmate, Ward, or Nexus to a TDC or TDF fabricated flange system. Project Profile
Downloadable Greenheck Literature
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Greenheck offers a complete and comprehensive line of damper products
for fire and smoke control in life safety systems and for airflow
control in commercial HVAC and industrial systems. 
The Great River Energy corporate headquarters, a new four-story 166,000 square-foot office building located in Maple Grove, Minnesota, was completed in April, 2008. Because of its commitment to environmental stewardship and its desire to provide excellent indoor air quality to the 350 employees who would occupy the building, Great River Energy elected to use environmentally responsible construction processes that will help qualify the building for LEED Platinum certification, the first in Minnesota. The contractor also wanted to meet a tight construction deadline by selecting HVAC products that would save installation time wherever possible.