Dampers control the direction and volume of air flow within duct to maintain HVAC system. .
Source content greenheck com Most residential and light HVAC systems will incorporate some combination of radial, rectangular, round-tube, collar tube, shutter, or blade style dampers to achieve balanced system.
Most blade style dampers are of the round, square, or rectangular shape due to the shape of the ductwork.
Sometimes referred to as collar type damper, these dampers are located near in the system to isolate zone or area. .
Radial style dampers open like fanned out deck of playing cards, allowing the designer to diffuse and control airflow.
In most cases, the installer adjusts and sets the blade during the installation.
Multi-zone HVAC dampers can be used conjunction with other dampers, like backdraft and control dampers to establish the efficient airflow path.
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