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The IO HVAC CONTROLS HD-BM-NA-3020 is a 30 x 20 Two-Position Zone Damper with a bottom mount and no actuator, designed for shafts sized 5/8-1/2. These extruded aluminum parallel blade dampers are shipped complete and ready for installation. The dampers can be installed in any position and have a simple adjustment for setting the minimum position. They are rated for duct systems less than 1.0” WC.
The IO HVAC CONTROLS HD-BM-NA-3020 is a 30 x 20 two-position zone damper with bottom mount and no actuator. It features extruded aluminum parallel blades and is ready for installation.
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