Io Hvac Controls MD-1408 Rectangular Zone Damper 14x8 in

Product Description

The IO HVAC CONTROLS MD-1408 is a rectangular two-position zone damper sized at 14 inches wide by 8 inches tall, designed for use in residential and light commercial HVAC zoning systems. It ships with a Belimo three-wire actuator that drives the blade between fully open and fully closed positions, enabling independent temperature control across separate zones within a ducted forced-air system. Licensed HVAC technicians install this damper directly into rectangular ductwork as part of a zoned air distribution setup. At 7 pounds, the unit is substantial enough for durable service while remaining manageable for a single-tech installation.

This damper is suited for rectangular supply or return duct runs in split-system or air handler applications where zone control is required. The two-position actuator responds to a 24-volt zone control panel signal, opening or closing the damper blade to direct conditioned air to the called zone. It is a common component in residential multi-zone retrofits and new construction zoning installations where individual room or area temperature control is the design goal.

Key Features

• 14 x 8 inch rectangular duct opening matches standard residential duct sizes
• Belimo three-wire actuator provides reliable two-position open and closed operation
• Compatible with standard 24-volt zone control panels and thermostats
• Factory-mounted actuator reduces field assembly time
• 7-pound construction built for long-term in-duct service

Compatibility

Designed as an OEM-style zone damper replacement or new-installation component for rectangular ducted forced-air HVAC systems using 24-volt two-position zone controls.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with zoning systems and low-voltage control wiring. Shut down the air handler and de-energize the zone control panel before installing or wiring the damper. The damper must be oriented per the blade-rotation direction marked on the unit to ensure proper open and closed travel. Follow local mechanical codes and manufacturer wiring diagrams when connecting the three-wire actuator to the zone control board.