Io Hvac Controls MD-2412 Rectangular Zone Damper 24x12 in

Product Description

The IO HVAC CONTROLS MD-2412 is a 24-inch by 12-inch rectangular two-position zone damper designed for forced-air HVAC zoning systems. It ships with a Belimo three-wire actuator, providing reliable open/close control in residential and light commercial duct systems. The two-position design opens fully on a call for conditioned air and closes when the zone is satisfied, helping balance airflow across multiple zones. Licensed HVAC technicians install this damper as part of a complete zoning setup, typically alongside a zone control board and low-voltage thermostat wiring.

The MD-2412 is sized for rectangular ductwork at 24 inches wide by 12 inches tall, making it a common fit for main trunk or branch duct runs in forced-air systems. The included Belimo three-wire actuator connects to standard 24-volt zone controllers and responds to zone demand signals. It is suited for residential zoning retrofits and new construction light commercial applications where multiple zones must be independently controlled off a single air handler or furnace.

Key Features

• 24 inches by 12 inches rectangular damper body fits standard duct openings of that size
• Two-position operation provides full-open and full-closed airflow control
• Includes Belimo three-wire actuator for dependable, commercial-grade actuation
• Compatible with 24-volt zone control systems and standard low-voltage thermostat wiring
• Rectangular construction suits trunk and branch duct installations in forced-air systems

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for rectangular forced-air duct systems using 24-volt two-position zone controllers.

Installation Notes

Installation should be performed by a licensed HVAC technician following local mechanical codes. Power down the air handler and de-energize all low-voltage control circuits before wiring the actuator. The damper must be mounted in the duct with airflow direction observed per the manufacturer marking, and the actuator wiring must be routed to the zone control board according to the controller manufacturer wiring diagram. Do not operate the system without confirming all duct connections are sealed and the actuator moves freely through its full range of travel.