Io Hvac Controls HD-NA-2020 Zone Damper 20x20

Product Description

The IO HVAC CONTROLS HD-NA-2020 is a two-position zone damper sized for 20-inch by 20-inch ductwork. It ships without an actuator, allowing the installer to pair it with a compatible actuator of their choice. The damper accepts a 5/8-inch to 1/2-inch shaft and is designed to control airflow in zoned forced-air HVAC systems. At 13.04 pounds, it is a substantial assembly suited for commercial or larger residential applications. Licensed HVAC technicians are the primary installers for this type of component.

This damper is intended for use in zoned ducted HVAC systems where individual zones require independent airflow control. The no-actuator configuration makes it a practical choice when replacing a damper blade assembly while reusing an existing actuator, or when sourcing the actuator separately to match a specific control board or zone controller. It fits a 20-inch by 20-inch duct opening and is applicable in both residential and light commercial forced-air systems.

Key Features

• Two-position operation for open/closed zone airflow control
• Sized for 20-inch by 20-inch duct applications
• Ships without actuator, allowing actuator selection to match existing control system
• Compatible with 5/8-inch to 1/2-inch shaft actuators
• Robust construction at 13.04 pounds for durable long-term installation

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for 20-inch by 20-inch ducted forced-air HVAC zoning systems requiring a two-position damper without an actuator.

Installation Notes

Installation should be performed by a licensed HVAC technician. Shut down the air handler and disconnect power to the zoning control system before installing or servicing this damper. Verify the replacement actuator shaft size matches the 5/8-inch to 1/2-inch shaft specification before mounting. Follow local mechanical codes and manufacturer guidelines for duct penetration, fastening, and actuator wiring.