IO HVAC Controls HD series dampers two-position rectangular dampers
The “HD” series rectangular two position dampers by IO HVAC Controls are extruded aluminum parallel blade dampers complete with a 24 volt spring return actuator. These dampers are shipped complete and ready for installation. The “HD” Series rectangular dampers can be installed in any position. They are rated for duct systems less than 1.0” WC. The “HD” series damper has a simple adjustment for setting the minimum position. These HD series dampers are available in various sizes.