Io Hvac Controls HD-NA-3810 Zone Damper 38x10

Product Description

The IO HVAC CONTROLS HD-NA-3810 is a two-position zone damper sized at 38 x 10 inches, supplied without an actuator and compatible with a 5/8-inch to 1/2-inch shaft. Designed for use in ducted HVAC zoning systems, this damper controls airflow to individual zones by moving between fully open and fully closed positions. It ships actuator-free, allowing contractors to pair it with their preferred actuator based on system voltage and control requirements. The HD-NA-3810 weighs 12.04 pounds and is appropriate for both new construction and retrofit zoning applications. Licensed HVAC technicians typically specify and install this component as part of a multi-zone forced-air system.

This damper is suited for residential and light commercial ducted forced-air systems where zone control is required. The 38 x 10 inch face size accommodates large trunk or branch duct openings common in multi-zone layouts. The no-actuator configuration makes it a flexible option when an existing actuator is being reused or when the installer is sourcing the actuator separately to match a specific zone control board or thermostat system.

Key Features

• Two-position operation: fully open or fully closed for straightforward zone airflow control
• 38 x 10 inch face size for large duct openings in zoning applications
• Ships without actuator, allowing pairing with contractor-selected actuator
• 5/8-inch to 1/2-inch shaft compatibility for flexible actuator mounting
• Weighs 12.04 pounds, built for durable in-duct installation

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for ducted forced-air HVAC systems requiring a 38 x 10 inch two-position damper with a 5/8-inch to 1/2-inch shaft interface.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with ducted zoning systems. Shut down the air handler and de-energize the zone control system before installing or replacing the damper. Verify shaft size compatibility with the intended actuator before mounting. Follow manufacturer and local mechanical code requirements for duct penetrations and damper placement.