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The IO HVAC CONTROLS HD-NA-2020 is a two-position zone damper without an actuator and a 5/8-1/2 shaft. This damper is designed for residential applications. It measures 20 x 20 inches and is rectangular in shape. Actuators are installed on the 2nd dimension.
The HD-NA-2020 is a 20 x 20 inch two-position zone damper from IO HVAC Controls, designed without an actuator and featuring a 5/8-1/2 shaft.
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