Io Hvac Controls HD-2012-BM Zone Damper 20x12 Rectangular

Product Description

The IO HVAC CONTROLS HD-2012-BM is a rectangular two-position zone damper designed for residential and light commercial HVAC zoning systems. Measuring 20 inches by 12 inches, this damper uses a 2-wire actuator to modulate airflow between open and closed positions within a ducted forced-air system. The bottom-mount actuator configuration provides clearance in tight duct runs and simplifies access for wiring. Zone dampers like this one are installed by licensed HVAC technicians to divide a single-system installation into independently controlled zones, improving comfort and energy efficiency across a structure.

This damper is suited for rectangular duct applications in residential split systems, heat pumps, and gas furnace installations where zone control is required. The two-position operation makes it compatible with standard zone control boards that switch a damper fully open or fully closed based on thermostat demand. The bottom-mount actuator orientation is particularly useful in horizontal duct runs where side-mount clearance is limited. HVAC contractors installing multi-zone systems will find this a straightforward drop-in fit for new construction and retrofit zoning projects.

Key Features

• Two-position operation opens and closes fully for simple zone control board compatibility
• 2-wire actuator wiring reduces low-voltage circuit complexity
• Bottom-mount actuator placement suits horizontal duct runs with limited side clearance
• Rectangular 20 inch by 12 inch duct opening fits standard residential duct sizing
• Weighs 10 pounds, indicating a robust metal damper body suitable for long-term duct installation

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for rectangular ducted forced-air HVAC systems requiring two-position damper control.

Installation Notes

Installation should be performed by a licensed HVAC technician. Shut down the air handler or furnace and set the thermostat to off before cutting into ductwork or making low-voltage wiring connections. Secure the damper to the duct with sheet metal screws and seal seams with approved duct tape or mastic per local mechanical code requirements. Verify actuator wiring polarity and zone control board terminal compatibility before restoring power to the system.