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The IO HVAC CONTROLS HD-BM-NA-2218 is a 22 x 18 Two-Position Zone Damper with a bottom mount and no actuator, featuring a 5/8-1/2 shaft. These dampers are constructed from extruded aluminum parallel blades and are ready for installation in any position. They are rated for duct systems less than 1.0” WC and have a simple adjustment for setting the minimum position.
The IO HVAC CONTROLS HD-BM-NA-2218 is a 22 x 18 two-position zone damper with bottom mount.
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