The 2016 Dealer Design Award gold-winning ventilation product, the Horizontal Mount Damper in Non-Concrete 2 Hour Fire Rated Barrier from Greenheck Fan Corp., was designed to protect duct penetrations ...
The patent-pending Barometric Zone Damper™ (BZD) works like any standard damper with one exception: It has a built-in barometric relief mechanism that eliminates the need for a bypass damper, said the ...
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